Answer:
A
Explanation:
Natural selection occurs when an environment makes organisms with certain traits more likely to survive and reproduce.
Asexual reproduction results in no genetic variation (meaning differences in traits, also called divserity). Genetic variation must be present for certain organisms to be better suited to their environment, because in its absence all organisms share the same traits. This rules out B, C, and D. I hope this helps :)
Selective pressures that favor certain individuals are necessary in order for natural selection to act on a population. Therefore, option (A) is correct.
What is natural selection?The process by which organisms are able to pass on the favorable qualities they possess to their offspring is known as natural selection. Organisms that are better able to adapt to their surroundings have a greater chance of surviving and reproducing in that environment. As a consequence of this, advantageous characteristics become more prevalent over time, whereas undesirable traits become less prevalent, resulting in a change in the genetic make-up of a population.
Natural selection can be influenced by a variety of environmental factors, including predation, competition for resources, and shifts in climate. It is a fundamental mechanism of evolution and contributes to our understanding of the diversity of life on Earth as well as the various ways in which different species have adapted to their surroundings.
Learn more about natural selection, here:
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Your friend Joe has a younger brother Sam and two older sisters. Sam has a strange disorder that has caused his hair to turn green. The doctor says that this is caused by a single gene that is inherited, and that boys are more likely to have green hair then girls. However Joe, his sisters, and both of his parents have normal hair color. Joe does not know much biology and is confused. Explain to Joe how his brother's condition could have arisen even though Joe has normal hair. Then discuss the likelihood that a) Joe, and b) Sam will have children with green hair. Assume that they both marry women with normal hair color. You will need to include information on meiosis and transmission of genes to assure that Joe understands. HINT: As part of your answer, indicate the percent of girls vs. boys that you predict would have green hair if fathered by Joe vs. Sam.
Answer:
The correct answer is - it is due to the case of sex-linked recessive disorder.
Explanation:
It is pointed out by the doctor that Sam has a condition due to recessive allele and it is given that boys have this condition more than girls which suggests that it is a sex-linked recessive disorder. This comes from their parents but it is given that the father has normal hair which means the father has no recessive allele, then it must come from the mother even mother has not this condition but she could be a carrier for this trait.
Joe and his sister do not have this condition as they get the normal dominant allele from mother and father.
The chances of being a carrier by his sisters are 50%. If Joe marries
IF Joe marries a non-carrier woman, he will have all normal children with no green hair. IF Joe marries a normal hair color carrier women then there would 25% chances of being diseased offspring and 50% chances of being a carrier, and if women is completely normal then all offspring will be normal.
carrier woman, his children will have a 25% chance of being green-haired. A 25% chance of being
IF Sam marries a normal woman, the children will have a 25% chance of being a carrier, a 25% chance of being green-haired, and a 50% chance of being normal.
Who is the father of taxonomy?
A. Carl Sutton
B. Robert Hooke
C. Charles Darwin
D. Carolus linnaeus
Answer:
☄ [tex] \boxed{ \boxed{ \pink{\large{ \tt{Carolus \: Linnaeus}}}}}[/tex]
☂ [tex] \underline{ \underline{ \purple{\large{ \tt{E \: X \: P \: L \: A \: N \: A \: T \: I \: O \: N}}}}} : [/tex]
⇿Carolus Linnaeus ( 1707 - 1778 ) is called the father of taxonomy.
Q. Why is Carolus Linnaeus called the father of taxonomy ?
Ans : Well , Carolus Linnaeus is called the father of taxonomy because he classified about 5900 species of plants and 4000 species of animals into two kingdoms : plant and animal.
♪ Hope I helped! ♕
♨ Have a wonderful day / night ! ☃
✎ [tex] \underbrace{ \overbrace{ \mathfrak{Carry \: On \: Learning}}}[/tex]
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Describe the role of photosynthesis and cellular respiration in ecosystems.
Answer:
photosynthesis and cellular respiration allow the carbon and oxygen that organisms consume and produce to be cycled through the ecosystem. They work together so that what is made from one process is used in the other. Without them the ecosystem would run out of carbon dioxide and oxygen, and everything would die.
Identify the missing parts of the carbon cycle.
Answer: The answer is this
Explanation: I’m not a 100% sure if this is the answer you were looking for lol good luck
Which process best explains how antibiotic resistance in bacteria can occur?
Answer:
Antibiotic resistance is a consequence of evolution via natural selection. The antibiotic action is an environmental pressure; those bacteria which have a mutation allowing them to survive will live on to reproduce. They will then pass this trait to their offspring, which will be a fully resistant generation.
Which three terms best describe the level of organization of life shown in this photo? A. Ecosystem I B. Biosphere C. Biotic factors D. Abiotic factors
Answer:
A???
Explanation:
I think it would be A. Ecosystem, bet don't quote me on that
Answer:
Explanation:
A, B, D
Please help with biology!!
Answer:
It increases the production of goods and made our life easier.
Explanation:
The main advantages of technology is that it increases the production of goods and made our life easier while on the other hand, the disadvantages of technology is that it make people lazy and make people socially disconnect from each other. The advantages of technology is that it helps to fulfill the demands of the population and decrease malnutrition problems in the population whereas the disadvantages of technology in food is that it causes many health problems and has low quality. Technology causes many damages to our health as well as our society. It causes pollution in the environment that changes the ecosystem and also leads to the extinction of various species.
How is your body temperature held constant?
The elasticity of those capillaries plays a central role in our ability to maintain constant body temperatures. When there's too much heat in the body, our capillaries automatically expand and increase the blood flow to the skin, allowing the excess heat to transfer to the air.
PLSSSSSS HELPPPPPP I REALLY NEED IT PLS NO LINKS PLS HELPPPPP ILL SEND 60 POINTS IF U HELPPP
What information would you like to know / obtain when interviewing someone that helps the Environment
Answer:
talking about the type of work environment you prefer is a great way to show employers that interviews are a chance for potential employers to find out who you are as a person and to Other versions of this question are, “What type of person do you work well with
Explanation:
I THINK IT WILL HELP FOR OTHERS
A watershed, also known as a drainage basin, is an area of land where water drains to a central point like a lake river or an ocean. natural vegetation in the landscape, helps maintain the natural flow of Regine of water and rapid change in water level in lakes and wetlands. imagine a position of a wetland that has changed as scenes in the image. predict what will happen to the natural flow of water is natural vegetation as replaced by impervious surfaces
A) groundwater flows increase to its endpoint causing flooding
B) runoff will increase and less water will penetrate the soil to become groundwater
C) groundwater will puddle up and remain in one place instead of flowing to a central point
D) impervious surfaces such as roads and parking lots will divert water flow and it will not reach its endpoint
Answer:
B) runoff will increase and less water will penetrate the soil to become groundwater.
D) impervious surfaces such as roads and parking lots will divert water flow and it will not reach its endpoint
Explanation:
The runoff will increase and less water will penetrate into the soil to become groundwater if natural vegetation is replaced by impervious surfaces. The natural vegetation helps to lower the speed and intensity by absorbing large amount of water. Due to this absorbing, there is an increase occur in the concentration of groundwater level which increases underground water reserves for the coming generations. These impervious surfaces also act as a barrier that diverts water and prevents the water to reach to its ending point.
B is the correct answer.
How do emission and reflection nebulae differ? (1 point)
the presence of young stars
contain remnants of stars
hard tine edges
interactions with light
Answer:
interactions with light
Explanation:
Answer: yes it is D)Interactions with light
Explanation:
When does DNA replication occur within the cell cycle?
Answer:
Interphase
Explanation:
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.
Which statements describe the synapse? Select all that apply
It carries information through electrical impulses to the cell body
It is part of the neuron.
It ensures that information travels in one direction only.
It carries information through chemical impulses to the cell body,
It is the gap between neurons
It ensures that information travels in multiple directions
Answer:
It ensures that information travels in one direction only.
It is the gap between neurons.
Explanation:
It's correct
Answer:
Explanation:
It ensures that information travels in one direction only.
It is the gap between neurons.
The four main forces that drive evolution are mutation, natural selection, genetic drift, and gene flow. All of these forces can cause a change in what?
Answer:
Allele frequencies
Explanation:
The only component that is transmitted from generation to generation is the genetic material (genes), the fact that an individual leaves more descendants implies that their genetic variants (alleles) will be more represented in the next generation. The frequencies of the different alleles will change from one generation to another, and this change will be irreversible when the set of genes in the population is considered, since it is highly unlikely that a previous configuration will be returned in all gene variants. Hence, from a population point of view, evolution is ultimately a cumulative and irreversible change in the proportions of different gene variants in populations. The agents that change the allele (or gene) frequencies of populations, that is, factors of evolution, are mutation, genetic drift, migration, and natural selection. Mutation is a factor that increases genetic diversity. Natural selection is the process by which the gene frequencies involved with certain traits vary from generation to generation, since some variants of the trait have a greater capacity than others to survive and produce offspring. The mutation rate of a gene or DNA sequence is the frequency at which new mutations occur in that gene or sequence in each generation. In each generation there is a gene raffle during the transmission of gametes from parents to children which is known as genetic drift. In the absence of gene flow, gene drift will also lead to local differences in allele frequencies.
PLEASE HELP i need it within like 10 mins
Answer:
2
Explanation:
Its 2 because it can be absorbed
Answer:
deep snow melting not 100% sure tho
PLEASE HELP ASAP! PLEASE DO NOT GIVE ME A VIRUSES!
Carbon dioxide and oxygen are linked together in the carbon and oxygen cycle. There are two cellular processes involved in this cycle. What are they called, and what does each process make?
Mark two answers below.
Carbon dioxide is generated by cellular respiration and released into the atmosphere.
Cellular respiration makes oxygen that plants and animals can release into the atmosphere.
Carbon dioxide is a product of photosynthesis that plants release into the atmosphere.
Photosynthesis makes oxygen that plants can release into the atmosphere.
Answer: Photosynthesis makes oxygen that plants can release into the atmosphere.
Explanation:
Clouds water cycle pls tell me :)
Answer:
Clouds exist in the atmosphere because of rising air. As air rises and cools the water in it can "condense out", forming clouds. Since clouds drift over the landscape, they are one of the ways that water moves geographically around the globe in the water cycle.
Answer:
Clouds exist in the atmosphere because of rising air. As air rises and cools the water in it can "condense out", forming clouds. Since clouds drift over the landscape, they are one of the ways that water moves geographically around the globe in the water cycle. There are four main parts to the water cycle: Evaporation, Convection, Precipitation
and Collection.
What are some natural processes that are affected by conduction?
Answer:
Conduction: Touching a stove and being burned. Ice cooling down your hand. Boiling water by thrusting a red-hot piece of iron into it.
Explanation:
...................
Most organisms have a fight-or-flight response when they sense danger. In mammals, two organ systems work together to produce this response.
Which of these body systems is involved in the information above?
Select one:
respiratory and circulatory
nervous and digestive
respiratory and excretory
nervous and endocrine
Answer:
Nervous and endocrine
Explanation:
The nervous system triggers the endocrine system to produce hormones that cause fight or flight
1. All of the following are correct statements about enzyme regulation EXCEPT: a. Enzymes can be inhibited by the products they produce. b. Enzymes can be inactivated by the addition of a functional group. c. Coenzyme and substrate availability can regulate enzyme reaction rate. d. The reaction rate slows as equilibrium is approached. e. The activity of an enzyme is covalently affected by allosteric regulators. ANSWER: e 2. All of the following are examples of a zymogen and its activating protease EXCEPT: a. chymotrypsinogen and chymotrypsin. b. procarboxypeptidase and elastase. c. proelastase and elastase. d. pepsinogen and pepsin. e. trypsinogen and trypsin. ANSWER: b 3. Proinsulin is converted into insulin by: a. proteolytic excision of a specific peptide. b. allosteric binding of glucose. c. phosphorylation to the active form. d. removal of phosphate by converter enzymes. e. none of the above. ANSWER: a
Answer:
1-For the first one, the statement which is not correct about enzyme regulation is the statement e which is The activity of an enzyme is covalently affected by allosteric regulators
2-The example which does not have a zymogen and activating protease is example b which is procarboxypeptidase and elastase.
3-The process by which proinsulin is converted into insulin is by method a which is proteolytic excision of a specific peptide.
Explanation:
1-All the other statements are correct as indicated below:
a-Enzymes can be inhibited by the products they produce. This is true because the rate of production is reduced in cases of some products. this indicates that the enzymes are not being able to further act.
b-Enzymes can be inactivated by the addition of a functional group. This is true because enzymes can be activated and inactivated manually.
c-Coenzyme and substrate availability can regulate enzyme reaction rate. This is true because lack or shortage conenzyme or substrate can reduce the reaction rate due to lack of availability of required components.
d-The reaction rate slows as equilibrium is approached. This is true as the reaction reaches equilbrium less products are converted back to reactants and less reactants are converted into products.
2-
Similarly all the other examples for 2 have either an activating protease or zymogen except procarboxypeptidase and elastase.
3-
The proinsulin has a specific peptide which is excised thus only option a is correct.
DNA carries the genetic code for all of the traits possessed by an organism. DNA code is used to make proteins in the ribosomes.
Above is a model of DNA. Your lab partner is confused about what the model is showing. How would you explain is to him? Select
ALL that apply.
A)
Chromosomes (D) are small segments
DNA (A) that code for one protein.
B)
DNA (A) is the genetic material found in the nucleus (C) of all cells (B).
C)
Genes (E) are small segments of DNA (A) on a chromosome (D) that code
for one protein.
At division, DNA (A) shortens and condenses into discrete segments of DNA
called chromosomes (D).
D)
E)
DNA (A) is made of chromosomes (E) that are organized into genes (D) in
the nucleus (C) of the cell.
Answer:b,c,d
Explanation:
They usa test prep told me
Write 3 sentences about what you learned yesterday about phases of the moon.
Answer:
1) There are 8 main phases of the moon: new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, and waning crescent.
2) A full moon occurs about once a month. (every 29.5 days to be exact)
3) The phases of the moon are caused by the light from the sun and the moon's orbit around the Earth.
Heating by direct contact between particles is called __________
Answer:
conduction.
Explanation:
Brown fur is dominant to white fur in rabbits. If a purebred white rabbit mates with a heterozygous brown rabbit: a. What are the genotypes and phenotypes that will be present in their offspring? b. What percentage of their offspring will be white?
answer: The parents' genotypes are BB and Bb. The offspring's genotypes are 50% BB, 50% Bb, which means their phenotypes are 100% brown.
Answer: a. brown (Bb) and white (bb) offsprings
b. 50% of the offsprings will be white
Explanation:
Oxytocin is a hormone that is released by the pituitary gland after a signal from the brain. The impacts of oxytocin release are shown here. The nervous, endocrine, and reproductive systems interact in a tightly controlled manner during the labor and delivery of a baby. Which of these statements describes why oxytocin is often administered by doctors to women who are scheduled to deliver their baby on a particular due date?
Answer:
Its this one
Explanation:
The nervous, endocrine, and reproductive systems interact in a tightly controlled manner during the labor and delivery of a baby.
Answer: C) Oxytocin will start and increase the frequency of contractions, which promotes the delivery of the baby using a positive feedback loop.
Explanation:
Got it right on the test :)
Which traits do you think are very strictly determined by your genetic make-up (genotype)?
Answer:
Reproduction, growth and development, regulation, homeostasis, and energy processing.
Explanation:
Reproduction, growth and development, regulation, homeostasis, and energy processing are the traits or characteristics that are determined by the genotype. These traits are under the control of genes of an organisms and can be changed if the change in the genes occurs while on the other hand, the physical characteristics of an organisms are determined by phenotype means phenotype is responsible for the appearance of an organisms.
HELP GIVING BRAINIEST!
escribe an adaptation to a plant's physical characteristic and explain how this adaptation helps the plant survive.
explain.
Answer:
so like a plant that loses leaves in the fall does so because it won't have sun in the winter. then they grow back. it adapts to the environment
Answer:
Pi is a number that is approximated by 3.14, or 22/7. It is the ratio of the circumference to the diameter of any circle. This ratio can be rearranged to find circumference of a circle by multiplying pi times diameter.
Explanation:
yeah i missed the answer just to get that and this guy talking about PLANTS. N e ways there u go.
calculate power when work is 20 J and time is 2 s
Answer:
10W
Explanation:
Power is the "ability to make work over time", so to get the power, just divide work by time.
20J/2s = 10 J/s = 10W
Answer:
10 watts
Explanation:
Power= work done/time
Power= 20J/2s
Power= 10 watts
What's the answer?????????????
Answer: b
Explanation:
state one similarity and one difference between parasitic and predatory modes of feeding
Answer:
The parasite obtains food and shelter from the host. Parasitism mode of life ensures food lodging and meals predatory modes is a relationship between a Predator and a Prey in which the predator is a living organism that catches and kills another species for food. They do not get shelter from prey.