The species may actually still be threatened because of a (b) bottleneck effect.
A kind of genetic drift is the bottleneck effect. Genetic drift is the process through which a population's allele frequencies shift as a result of random occurrences. There is no pressure favoring any one allele over others, and the shift in frequency is completely random.
Natural selection, in contrast to genetic drift, is a process through which a population gradually adapts to its surroundings. In contrast to genetic drift, which is a random process, natural selection promotes the fittest genes. The following are the stages of a bottle-neck effect:
Before it happens: Genetic variety exists in the population before a random event happens.Unexpected occurrence: A random occurrence of some type triggers the impact.Less genetic variety exists: because only a small portion of the population, including their alleles, survives.Learn more about genetic drift and natural selection here:
https://brainly.com/question/12735785
#SPJ4
Place the following excitation-contraction coupling events in the order that they occur.
End-plate potential reaches threshold
Action potential sent throughout the sarcolemma
Voltage-sensitive DPH receptors are activated
Conformational change opens RyR1 channels
Release of calcium into sarcoplasm
Events involving excitation-contraction coupling , The EC-coupling cycle involves the following events: action potential depolarization of the plasma membrane and its membrane invaginations (the t-tubular system); transduction of the depolarization signal to the sarcoplasmic reticulum (SR) membrane; and activation of Ca2+ release from the SR.
At the myoneural junction, ACh is released.ACh assists in opening nicotinic cholinergic receptors and entrance of Na+ that opens the voltage gated (Na+) channels as they bring to threshold. Sarcolemma action potential regenerationThe action potential travels down the sarcolemma to the T-tubules, causing a conformational change in the voltage sensitive DHP (dihydropyridine) receptors. DHP activation aids in the opening of RyR1 channels. The T-tubules are depolarized, resulting in the opening of calcium ion channels in the SR. Step Myosin heads connect to begin contraction.
Learn more about to EC visit here;
https://brainly.com/question/22437256
#SPJ4
which of the following diseases is now being diagnosed more frequently in children than in the past? A. type 2 diabetes B.type 2 diabetes C.arthritis D.Cardiovascular disease
Nowadays, pediatric cardiovascular disease diagnoses are more common than in the past.
What causes sickness to start?Desai quoted Hippocrates as saying that "all sickness originates in the stomach." "The digestive system acts as a protective barrier against the substances we intake and stops hazardous compounds from entering the circulation. Inflammation may develop in the event that this protective barrier is breached and those dangerous chemicals pass through.
What results in disease?The most frequent culprits are bacteria, fungus, viruses, and parasites. Diseases that are contagious often transmit from person to person, through tainted food or drink, and through insect bites. There are infectious illnesses of varying severity.
To know more about Disease visit:
https://brainly.com/question/8611708
#SPJ4
Tolman believed that rats form cognitive maps, internal representations of the layout of the world. (A) In one experiment, rats placed at the start of a maze learned to run directly to a goal box where food was provided; the purple line shows the rats' route. (B) If the preferred route was blocked, rats could easily find an effective alternative route (orange line); this indicates that they had information about the spatial layout of the maze.
Edward Tolman is the author of the phrase "cognitive map," which describes the mind's internal representation of the external environment.
He believed that people pick up a lot of signals from their surroundings and can utilize those signals to create a mental picture of their surroundings. They might reach their objective by employing this mental model of physical space to locate it among intricate environmental elements.As a result, cognitive mapping is both a type of memory and more. Memory is the process of remembering the order of the streets in the directions to your house; cognitive mapping is the process of visualising these streets as you talk. In their book "Cognitive Mapping and Spatial Behavior," Downs and Stea provide a useful definition of cognitive mapping. a method by which a person learns, encodes, stores, recalls, and decodes information about the relative placements and characteristics of occurrences in their daily spatial environment.To know more about cognitive check the below link:
https://brainly.com/question/26504675
#SPJ4
Exhalation begins when
A. inspiratory muscles relax.
B. diaphragm contracts.
C. blood circulation is the lowest.
D. both A and B
E. all of the above
Exhalation begins when inspiratory muscles relax. Inspiratory muscles relax such as the external intercostals, exhalation will also occur.
Breathing is the term used to describe pulmonary ventilation. It involves the movement of air through the lungs as you breathe in (inhalation) and exhale (exhalation). The environment and the gases in the lungs have different pressures, which causes air to move.
The act of releasing air from the lungs during the breathing cycle is known as expiration (exhalation). Expiration causes the diaphragm to relax and tissues to rebound elastically, which reduces the thoracic volume and raises interalveolar pressure. The act of exhaling forces air out of the lungs.
To learn more about exhalation, visit the link below:
brainly.com/question/9491266
#SPJ4
the simplest reflex where muscles contract in response to excessive stretch (click to select)prevents contracting muscles from applying tension to tendons (click to select)removes a body part from a painful stimulus (click to select)response to a withdrawal reflex; causes extension of the opposite limb (click to select)
The simplest reflex where muscles contract in response to excessive stretch Stretch reflex prevents contracting muscles from applying tension to tendons Withdrawal reflex removes a body part from a painful stimulus Crossed-extensor reflex response to a withdrawal reflex; causes extension of the opposite limb Golgi tendon reflex.
The stretch reflex or myotatic reflex refers back to the contraction of a muscle in reaction to its passive stretching by using growing its contractility so long as the stretch is within physiological limits.
The Golgi tendon reflex is a response to sizable anxiety on a tendon. It allows keep away from robust muscle contractions which could tear the tendon from either the muscle or bone. In sports activities, short moves can harm the tendon before the reflex can arise.
The receptor responsible for initiating a stretch reflex is the muscle spindle. Muscle spindles are determined in almost all skeletal muscle groups and are especially concentrated in muscle tissues that exert exceptional motor manage.
Learn more about withdrawal reflex here:-https://brainly.com/question/7157065
#SPJ4
Disclaimer:- your question is incomplete, please see below for the comlete question.
1. The simplest reflex; muscles contract in response to a stretch 2. Prevents contracting muscles from applying tension to tendons 2.Removes a body part from a painful stimulus
3. Response to a withdrawal reflex; causes extension of the opposite limb
-Withdrawal reflex
-Golgi tendon reflex
-Stretch reflex
-Crossed-extensor reflex
Australopithecines have been found mainly in two African regions. These areas exhibit unique geological conditions that have allowed fossils to be preserved for millions of years. Drag the appropriate site type to the location in Africa where it is foundSouth Africa - limestone caves - Au. africanus and Au. robustus have been found in multiple South African locations. Eastern Africa - sedimentary basins and river drainage systems - Many australopithecine fossils have been found in the Great Rift Valley, including the famous Au. afarensis.
Au. africanus and Au. robustus has been discovered in a number of South African limestone caverns. Eastern Africa: Sedimentary basins and river drainage systems. The Great Rift Valley is home to numerous australopithecine fossils, including the renowned Au. afarensis.
The most well-known Australopithecus fossil discoveries in East and South Africa are probably "Lucy" and "Mrs Ples." As opposed to what some have previously claimed, Australopithecus fossils from the richest hominin-bearing stratum (Member 4) at Sterkfontein in South Africa are much older and are contemporaneous with Australopithecus afarensis in East Africa. Afarensis exhibited traits common to both apes and humans. These traits included apelike face proportions (a flat nose, a prominently projecting lower jaw), a small braincase (often less than 500 cubic centimetres, or about 1/3 the size of a modern human brain), and long, powerful arms with curved fingers.
Thus, we can state that a number of South African limestone caverns have been found to contain the Au. robustus and Au. africanus. Sedimentary basins and river drainage networks in Eastern Africa. Numerous australopithecine fossils, including the well-known Au. afarensis, may be found in the Great Rift Valley.
Learn more about Australopithecus fossils here:
https://brainly.com/question/17406854
#SPJ4
During which stage(s) of plant seed germination (1-5) is cellular respiration required to supply all plant cells with the ATP required to fuel growth and development? Select ALL that apply.
Stages 1, 2, 3, 4, & 5
During Stages 1, 2, 3, 4, & 5 of plant seed germination is cellular respiration required to supply all plant cells with the ATP required to fuel growth and development.
Seed germination is the method of growing plants from seeds rather than purchasing pre-grown plants. When compared to germinating seeds directly in the soil, sprouting seeds indoor environment is an efficient way to boost the germination rate. The procedure by which a microbe develops from a seed or spore is known as germination.
Cellular respiration produces ATP molecules, which provide energy for seed germination and fuel the cellular activity that eventually forms the plant.
As cellular respiration occurs in germinating seeds, the carbon dioxide released is proportional to the oxygen taken up by the seed. This CO2 (gas) interacts with Calcium oxide to establish calcium carbonate (solid), reducing the amount of gas and allowing the water to rise.
For more information on Seed germination, visit :
https://brainly.com/question/2203179
#SPJ4
applied behavior analysis is an example of [ select ] , and it based on laboratory studies of [ select ] .
Applied behavior analysis (ABA) is an example of [a form of therapy to treat issues with communication, motor skills, and behavioral disorders], and it is based on laboratory studies of [hormone levels].
This therapy applies to the understanding of how behavior works in real-life situations, for increasing behaviors that are of useful help and decreasing behaviors that are dangerous or simultaneously affect learning. Discrete trial teaching also known as discrete trial training or learning is known to be rooted firmly in behavioral learning theory. This applied behavior analysis is based on laboratory studies of hormone levels.
Now you need to understand here that hormones level play a great role in applied behavior analysis because an imbalance in hormones causes abnormal behavior.
To know more about applied behavior analysis:
https://brainly.com/question/5995547
#SPJ4
j
Calculate the SA:V ratio for a spherical cell with a radius of 5 and the SA:V ratio of a single cuboidal cell with a side *7. Then, state which cell would be most efficient at transport across the membrane.
The SA:V ratio for a spherical cell with a radius of 5 is 0.6 and the SA:V ratio of a single cuboidal cell with a side *7 is 1.16.
What is cell?Cell is defined as the smallest component of all living things, including cells and tissues in the body, that is capable of independent living.
Surface area of spherical cell = 4λr²
Surface area of spherical cell = 4 x 3.14 x (5)²
Surface area of spherical cell = 314
Volume of spherical cell = 4/3λr³
Volume of spherical cell = 4/3 x 3.14 x (5)³
Volume of spherical cell = 523
Ratio = 314 / 523 = 0.6
Surface area of cuboidal cell = L x B x H
Surface area of cuboidal cell = 7 x 7 x 7
Surface area of cuboidal cell = 343
Volume of cuboidal cell = 2 x l x w + 2 x l x h + 2 x h x w
Volume of cuboidal cell = 2 x 7 x 7 + 2 x 7 x 7 + 2 x 7 x7
Volume of cuboidal cell = 98 + 98 + 98
Volume of cuboidal cell = 249
Ratio = 343 / 249 = 1.16
Thus, the SA:V ratio for a spherical cell with a radius of 5 is 0.6 and the SA:V ratio of a single cuboidal cell with a side *7 is 1.16.
To learn more about cell, refer to the link below:
https://brainly.com/question/30046049
#SPJ1
which of the following is not a safety mechanism in place to help maintain cell order and decrease the chance of cancer developing in the body?
Initiating event is not a safety mechanism in place to help maintain cell order and decrease the chance of cancer developing in the body.
If cancer runs in the family, how can you prevent it?You might need to begin screening tests earlier, undergo tests more frequently, or undergo tests that are different from what other people receive. surgery or medication that may reduce your risk of developing cancer. making healthy decisions, including giving up smoking, abstaining from alcohol, exercising frequently, and maintaining a healthy weight.
Genes, the fundamental building blocks of inheritance, undergo specific changes that lead to cancer. Long, densely packed DNA strands called chromosomes contain the arrangement of genes. Cancer is a genetic disease, meaning that genetic changes that affect how our cells function—particularly how they grow and divide—cause the disease
To know more about cancer visit:
https://brainly.com/question/19722255
#SPJ1
Match the following major signs and/or symptoms with a particular source of a food-borne or water-borne illness. Nausea; muscle pain; fatigue; facial swelling, especially around eyes Norovirus Clostridium botulinum Campylobacter jejuni Abdominal cramps, diarrhea (can be bloody), fever, and vomiting Stomach flu Blurry vision, difficulty swallowing, and general muscle weakness Sore throat and violent coughing Giardia Trichinella "Explosive" vomiting and watery, non bloody diarrhea Diarrhea, abdominal pain, weight loss Frequent urination
The nurse may identify these as dysphagia symptoms if a patient develops nausea, vomiting, abdominal pain, diarrhea, and lightheadedness after meals following gastric bypass surgery.
The term "dysphagia" refers to a medical disorder where a person may experience swallowing issues, leading to a variety of symptoms like nausea, vomiting, stomach cramping, etc. after meals.Because health issues are linked to difficulties moving both food and liquids from the mouth to the stomach, the individual's health symptoms may also manifest while they are drinking (rather than only when they are eating).With this information, we can see that the dysphagia condition is linked to swallowing issues in a person or patient, and as a result, the above-mentioned list of frequent symptoms can be used to characterize this sort of disease.
To know more about dysphagia
https://brainly.com/question/14328336
#SPJ4
use the list of terms provided to label the accompanying illustration of cutaneous receptors. check off each term as you label it.
These consist of Merkel's discs, free nerve endings, pacinian corpuscles, and Ruffini's endings.
In what ways do Pacific corpuscles shield the skin?Pacinian corpuscles are quickly adaptable (phasic) sensors that pick up on skin vibrations and large pressure changes. Action potentials are produced whenever the corpuscle deforms because the axon membrane's pressure-sensitive sodium ion channels open.
Pain is felt by Pacinian corpuscles?These proliferating Pacinian corpuscles, which are not innervated by nociceptive nerve fibers, appear to have a normal structure, yet they are incredibly sensitive to pain. An changed innervation after trauma appears to be the only logical explanation for the discomfort.
To know more about Pacinian corpuscles visit:
https://brainly.com/question/29515487
#SPJ4
FILL IN THE BLANK. when a molecule binds to a taste receptor cell, a _____ is secreted and an action potential occurs over a sensory neuron. the nerve impulse continues through the _____ and the_____ , and is interpreted in the ____ lobe of the cerebrum. senso____ also occurs rather quickly, which helps explain the reason the first few bites of a particular food have the most vivid flavor.
when a molecule binds to a taste receptor cell, a neurotransmitter is secreted and an action potential occurs over a sensory neuron. The nerve impulse continues through the medulla oblongata and the thalamus , and is interpreted in the temporal lobe of the cerebrum. Sensory neurons also occurs rather quickly, which helps explain the reason the first few bites of a particular food have the most vivid flavor.
What is neurotransmitter?
In the synaptic cleft, where they can interact with receptors on the target cell, neurotransmitters are released from synaptic vesicles. The receptor that the neurotransmitter attaches to determines how the neurotransmitter affects the target cell.
What are the functions of a neurotransmitter?
Neurotransmitter is a chemical messenger that transports, amplifies, and balances messages between target cells and neurons (also known as nerve cells) all over the body.
To know more about neurotransmitter visit
brainly.com/question/9725469
#SPJ4
Atmospheric
pressure is also known as barometric pressure because it
is measured using a barometer. A rising barometer indicates increasing
atmospheric pressure and a falling barometer indicates decreasing
atmospheric pressure.
HOW DOES THIS FACT FROM MY SUB QUESTION ANSWER THAT COMES FROM A ARTICLE RELATE TO MY RESEARCH QUESTION WHICH IS
What effect does the amount of air pressure have on how far a soccer ball travels when kicked?
pressure is also known as barometric pressure because it
is measured using a barometer. A rising barometer indicates increasing
atmospheric pressure and a falling barometer indicates decreasing
atmospheric pressure.
HOW DOES THIS FACT FROM MY SUB QUESTION ANSWER THAT COMES FROM A ARTICLE RELATE TO MY RESEARCH QUESTION WHICH IS
What effect does the amount of air pressure have on how far a soccer ball travels when kicked?
trace the path of lymph from the time it leaves the interstitial spaces to the time it enters the blood.
The lymph trunks then merge to form the right lymph duct and the thoracic duct. The lymph is carried by these ducts into the right and left subclavian veins, which flow into the vena cava.
This is the point at which lymph fluid exits the interstitial space of tissues and returns to blood circulation. Examine all of the lymph components. Trace the path of lymph from its exit from the interstitial spaces to its entry into the blood.
1. Capillaries of lymphatic fluid
2. Lymphatic afferent vessels
3. The lymph nodes
4. Lymphatic efferent vessels Lymphatic ducts.
Connect the lymphatic trunk to the major body region it drains. The lymphatic pathway is an open channel through which lymphatic fluid circulates. Because the channel is one-way.
To learn more about lymph please click on below link
https://brainly.com/question/3760478
#SPJ4
when a nucleotide is added to a growing nucleic acid strand during dna replication, the incoming monomer is and the energy required to drive the polymerization is derived from . please choose the correct answer from the following choices, and then select the submit answer button. answer choices a nucleoside triphosphate; dna polymerase an rna primer; cleaving a pyrophosphate dna; rna a nucleoside monophosphate; cleaving atp a nucleoside triphosphate; cleaving a pyrophosphate
When a nucleotide is added to a growing nucleic acid strand during DNA replication, the incoming monomer and the energy required to drive the polymerization are derived from the outermost 2 phosphates (pyrophosphate).
Deoxyribonucleic acid is a polymer of polynucleotide chains that coil spherically each one-of-a-kind to form a double helix. The polymer includes genetic instructions for the development, functioning, boom, and replica of all seemed organisms and lots of viruses.
In all dwelling things, DNA is vital for an inheritance, coding for proteins, and offering instructions for life and its tactics. Human cells commonly consist of 23 pairs of chromosomes, for a complete forty-six chromosomes in every cell.
Mitochondria are structures within cells that convert the power from meals right into a shape that can be used by cells.
Learn more about DNA here:-https://brainly.com/question/21992450
#SPJ4
the membrane potential becoming more positive in value is called blank whereas, blank refers to the membrane potential becoming more negative than the resting membrane potential.
The membrane potential becoming more positive in value is called depolarization whereas, hyper-polarization refers to the membrane potential becoming more negative than the resting membrane potential.
What is membrane potential?A potential gradient known as membrane potential causes ions to passively migrate in one direction: positive ions are drawn to the "negative" side of the membrane, while negative ions are drawn to the "positive" side.
The unequal distribution of ions (charged particles) inside and outside the cell, as well as the membrane's varying permeability to various ions, influence the resting membrane potential.
The equilibrium potentials of the ions to which the membrane is permeable are represented by the membrane potential. An ion's ability to carry electricity determines how much it will affect a cell's membrane potential.
So, the membrane potential becoming more positive in value is called depolarization whereas, hyper-polarization refers to the membrane potential becoming more negative than the resting membrane potential.
To know more about membrane potential refer to:
https://brainly.com/question/14546588
#SPJ1
Metabolic Steps inside of the Skeletal Muscleste Drag and drop each of the following terms into the muscle tissue, representing the correct utilization of substrates and other intracellular products. Drag the appropriate labels to their respective targets. Note: not all labels will be used.
One of the three important muscle tissues in the human body is found in the skeleton. Thousands of muscle fibers are encased in connective tissue sheaths to form each skeletal muscle. Fasciculi are the individual bundles of muscle fibers found within skeletal muscles
Which metabolic activities take place in skeletal muscle?These pathways include the breakdown of muscle glycogen and phosphocreatine, which allows for substrate-level phosphorylation (also known as "anaerobic") and oxidative phosphorylation using reducing equivalents from the metabolism of carbohydrates and fats (also known as "aerobic").
ATP must be replenished at a rate that is compatible with ATP demand in order to maintain muscle contraction. To refuel ATP in muscle, three energy systems work: phosphoglycation, glycolysis, and mitochondrial respiration.
Note that an overview was given as your information is incomplete.
Learn more about skeletal muscle on:
https://brainly.com/question/12252128
#SPJ1
A biology student is reading research articles about the effects of various feedback mechanisms on the human body. Based on commonly accepted scientific theories and models, Which of the following is an example of a correct prediction of a positive regulatory feedback mechanism?
a. The circulatory system responds to an elevated blood pressure, reflexively causing the heart rate to decrease.
b. The digestive system normally secretes the inactive enzyme pepsinogen. When a person eats, the pepsinogen is converted into the digestive enzyme pepsin.
c. The respiratory system sends nerve impulses to increase breathing rate during periods of high stress, which can produce additional stress due to a feeling of loss of breath.
d. The endocrine system measures the level of blood testosterone. High levels of the hormone will signal the hypothalamus to stop the production of other hormones like GnRH and LH.
An example of a correct prediction of a positive regulatory feedback mechanism is option b.
What is positive regulatory feedback mechanism in body?
Positive regulatory feedback mechanism is a type of feedback loop in the body which occurs when the output of a process stimulates the same process to further increase the output. For example, during exercise, the body produces adrenaline which stimulates the heart to beat faster and also increases the production of adrenaline. This creates a positive feedback loop, as the increased adrenaline stimulates the heart to beat faster, which in turn increases the production of adrenaline. This mechanism ensures that the body continues to produce the necessary hormones and other substances to sustain the activity. In other words, positive regulatory feedback mechanism is the body's way of ensuring that the body maintains its equilibrium and is able to carry out its activities without any disruption.
The chemical pepsin is used by the stomach to digest proteins. It starts by secreting an enzyme called pepsinogen, which is inactive. When food is consumed and the body needs to digest it, pepsinogen is converted into pepsin. The process of turning more pepsinogen molecules inside the stomach into pepsin triggers a positive feedback loop, allowing the stomach to produce enough of the protease to break down proteins.
To know more about positive regulatory feedback mechanism in body from given link
https://brainly.com/question/17849650
#SPJ1
suppose that a carrier of familial down syndrome mated with a person with a normal karyotype. which gamete from the carrier parent could fuse with a gamete from the normal parent to produce a trisomy-21 zygote? drag one of the gamete cells to the target of group 1 in the diagram. drag one of the zygote cells to the target of group 2 in the diagram.
The gamete cells in groups 1 and 2 in the diagram that have trisomy 21 are the target. Move a single zygote cells to group 2's desired location in the diagram.
How long will people with trisomy 21 live?The typical lifetime of a person having Down syndrome today is 60 years. A child with Down syndrome had a 25-year lifespan on average as late as 1983.
trisomy 21 a life-threatening condition?Up to 6,000 children are born with Down ’s syndrome every year in the U.s, where it affects 1 in 800 newborns. Approximately 85% of babies with Down syndrome are thought to survive to adulthood, and 50% of them do so for more than 50 years.
to know more about trisomy 21 visit:
https://brainly.com/question/484286
#SPJ4
For example, when the body is infected with a disease, white blood cells of the immune system will express genes that produce antibodies. Injuries, such as cuts around wounds, will initiate the expression of genes in the cells of the injured tissues for clotting factors. Temperature even determines male or female differentiation an some organisms. In certain species of alligators, eggs incubated at temperatures below 30°C will typically develop into females, while eggs incubated above 34°C will typically develop into males,
TDQ7: There are 3 roles of cellular division that are essential to organisms. You need to know them and be able to explain them. Explain why each role is essential for life?
1. Allows for growth of the organism.
2. Allows for cell differentiation.
3. Replaces dead cells.
Because it is constant and independent of the other variables, the incubator is the independent variable.
A variable that can be affected by the other variables is known as an independent variable. The fact that this kind of variable is independent means that it never changes. Due to its changing behaviours, the temperature is the dependent variable in this experiment, but the incubator is the independent variable because of its constant behaviours.The offspring's gender is a dependent variable because it is influenced by the incubation temperature. Environmental factors, such as food, water, and environmental conditions, among others, may be controlled variables.Therefore, since the incubator does not vary and is independent of the other component, we can draw the conclusion that it is the independent variable.
To know more about incubator
https://brainly.com/question/19207383
#SPJ4
Study the section of the chapter addressing with Figure. What would you expect to see in flies that lack the gene that encodes Bicoid? (Assume that Bicoid does not influence the expression of the others)
a. Stripe 2 would expand toward the tail of the embryo. b. Stripe 2 would become fainter.
c. Stripe 2 would expand toward the head of the embryo.
d. Stripe 2 would become narrower. e. All 7 stripes would disappear.
Stripe 2 would become fainter in flies that lack the gene that encodes Bicoid. Thus the correct answer is option (B).
The homeotic protein known as Bicoid is encoded by the Bicoid maternal effect gene in Drosophila. The anterior-posterior (A-P) axis is shaped during Drosophila development by a gradient in the concentration of the homeotic protein known as Bicoid. Bicoid was the first protein that was demonstrated to have morphogen-like properties. Although Bicoid is essential for Drosophila and other higher dipterans to thrive, it is absent in most other insects, where alternative genes take their place. The bicoid gene plays a crucial role in the early embryo's establishment of the head-to-tail axis. Without a bicoid, the embryo cannot form a head or a tail; instead, its body parts develop in an arbitrary order. This is due to the bicoid's role in patterning the embryo's anterior-posterior axis. To put it another way, it aids in figuring out which end of the embryo will develop into the head and which end will develop into the tail.
The complete question is:
Study the section of the chapter addressing with Figure. What would you expect to see in flies that lack the gene that encodes Bicoid? (Assume that Bicoid does not influence the expression of the others)
a. Stripe 2 would expand toward the tail of the embryo.
b. Stripe 2 would become fainter.
c. Stripe 2 would expand toward the head of the embryo.
d. Stripe 2 would become narrower.
e. All 7 stripes would disappear.
To learn more about Bicoid please click on the given link: https://brainly.com/question/29486891
#SPJ4
I need help with my Populations from biology class
The term "population" refers to all citizens who are either permanently residing in a country or who are just passing through.
What is Population?This indicator reveals how many people typically reside in a certain area. Growth rates are the population changes that occur each year as a result of births, deaths, and net migration.
The total population also includes national military forces deployed overseas, merchant mariners at sea, diplomatic staff based abroad, civilian foreign nationals residing in the nation, and internally displaced people residing in the nation.
Demographic tools like population predictions are frequently used. They serve as the foundation for additional statistical projections.
Therefore, The term "population" refers to all citizens who are either permanently residing in a country or who are just passing through.
To learn more about population, refer to the link:
https://brainly.com/question/27991860
#SPJ1
A particular species of potatoes can have red or yellow skin color. The skin color is
controlled by a single gene with two alleles, the red allele and the yellow allele. When
potatoes are homozygous for red skin color are crossed with potatoes that are homozygous
for yellow skin color, 100% of the offspring have red skin color. Based on this information,
how do the alleles for skin color interact?
* 2 point:
Answer: Red skin color is dominant, it is a simple trait controlled by one gene.
Explanation:
RR x yy = Ry, Ry, Ry, Ry
Answer:
Red skin color is dominant
Explanation:
Whether an animal excretes ammonia, uric acid, or urea has mostly to do withWhich follow statements about the pephron is false?
Availability of water in its niche, dietary strategies, metabolic costs statements about the pephron is false.
What is the main cause of uric acid?Your body converts purines, which are substances that are naturally found there, into uric acid. Purines are also found in several foods, including red meat and organ meats as liver. Seafood that is rich in purines includes prawns, herring, oysters, crabs, trout, and tuna.
What does a high uric acid level mean?If there is too much uric acid in the body, a condition called hyperuricemia will manifest. Gout may lead to monosodium urate crystals, also known as uriate crystals. The buildup of these crystals inside the joints can cause gout, a severe form of arthritis. Additionally, they could get stuck there and form kidney stones.
To know more about Uric acid visit:
https://brainly.com/question/15855329
#SPJ4
which of the following senses converts the presence of dissolved chemicals into a graded membrane potential?
Taste, Hearing, and Vision senses convert the presence of dissolved chemicals into a graded membrane potential. Thus the correct answers are options (A,B,C).
To produce or stimulate the perception of taste, a substance in the mouth interacts chemically with taste receptor cells on taste buds in the oral cavity, typically on the tongue. Taste, olfaction, and trigeminal nerve stimulation all contribute to determining the flavors of foods and other substances (which registers texture, pain, and temperature). Humans have taste receptors in a number of locations, including the epiglottis and upper surface of the tongue. The gustatory cortex is in charge of flavor perception.
The complete question is:
Which of the following senses converts the presence of dissolved chemicals into a graded membrane potential?
Select one:
a. Hearing
b. Taste
c. Vision
d. Smell
To learn more about taste click on the given link: https://brainly.com/question/29775791
#SPJ4
29. In a genetic engineering experiment a piece of double-stranded DNA containing 18000
nucleotides coding for a specific polypeptide is transcribed and translated.
What is the total number of amino acids in this polypeptide?
0/1.5 POINTS
A1000
B 3000
C 6000
D 9000
E 18000
The total number of amino acids in the polypeptide containing 18000 nucleotides coding are 6000. Hence option B is correct.
What are nucleotides?Nucleotides are defined as an organic molecule with the building blocks of phosphate, pentose sugar, and nitrogenous base. They have genetic material in them. As coenzymes, nucleotides are necessary for enzymes to catalyze various biological processes.
One amino acid can only be created by the combination of three nucleotides. Therefore, 500 amino acids will be created from 1500 nucleotides. To encode 20 amino acids, a codon must include at least three nucleotides.
Thus, the total number of amino acids in the polypeptide containing 18000 nucleotides coding are 6000. Hence option B is correct.
To learn more about nucleotides, refer to the link below:
https://brainly.com/question/16308848
#SPJ1
One advantage of primary research is that it avoids needless duplication of costly research efforts.
Indicate whether the statement is true or false
One advantage of primary research is that it avoids needless duplication of costly research efforts: statement is false.
What are the advantages of primary research?Primary research is a practise that researchers employ to gather data directly as opposed to relying on data from earlier study. They "own" the data in theory. Primary research is only done to solve a specific issue that needs in-depth investigation.
Primary research ensures that the data gathered is current and pertinent, allowing precise patterns to be shown. Additionally, primary research gives the individual or organisation access to the information.
Primary research often costs more, takes longer, but produces more definitive results than secondary research. Research that has previously been prepared, gathered, arranged, and published by others is known as secondary research.
So, the given statement is false.
To know more about primary research refer to:
https://brainly.com/question/25331996
#SPJ1
in ethiopia, the people got a grant from the government to set aside land for natural vegetation to return. when there is vegetation on the land, the water sinks slowly into the ground. true or false
The given statement is true that the vegetation on land makes the water sink into the ground slowly.
Vegetation refers to the plants present on the ground. It is the total plant cover of an area. It includes all the plant types i.e. herbs, shrubs and trees. Vegetation makes the passage of water slow and this process prevents the soil erosion. Also the water that passes through the vegetation is said to be more pre and pollutant free.
Water is the most essential entity of life. It is said than approximately more than 70% of the earth is covered with water. However, the drinking fresh water makes only 0.5% of it. 30% of this freshwater is present as groundwater.
To know more about water, here
brainly.com/question/19920929
#SPJ4
what are enzymes for grade 8?
Answer:
Enzymes are proteins that participate in cellular metabolic processes that speed up the rate of reaction between biomolecules. Basically enzymes are proteins that catalyze reactions. Each enzyme has a specific function, and one enzyme acts on one substrate - the material that binds to the enzyme's active site. The shape of the enzyme has to match the substrate shape for the reaction to occur. How enzymes work is that they bind molecules so they are held in a geometric configuration that lets the reaction to occur.