The statements that describe how cell division and sexual reproduction contribute to huge genetic variation is as follows:
The ability of homologous chromosomes to swap and exchange gene regions in meiosis contributes to genetic variation.Random assortment of homologous chromosomes in metaphase I increases the variation of chromosomes that segregate into gamete cells in meiosisRandom fertilization of haploid eggs by many potential haploid sperm increases genetic variationSEXUAL REPRODUCTION:
Sexual reproduction is the kind of reproduction that involves two organisms (male and female). Sexually reproducing organisms produce gametes or sex cells by a process called MEIOSIS. Meiosis reduces the chromosome number by half i.e. from diploid (2n) to haploid (n). A process called crossing over, which is the process by which non-sister chromatids of homologous chromosomes exchange their genetic material. The process of crossing over aids in genetic variation.The statements that describe how cell division and sexual reproduction contribute to huge genetic variation is as follows:
The ability of homologous chromosomes to swap and exchange gene regions in meiosis contributes to genetic variation.Random assortment of homologous chromosomes in metaphase I increases the variation of chromosomes that segregate into gamete cells in meiosisRandom fertilization of haploid eggs by many potential haploid sperm increases genetic variationLearn more at: https://brainly.com/question/12327654?referrer=searchResults
Answer:
1. Random fertilization of haploid eggs by many potential haploid sperm increases genetic variation.
2. Random assortment of homologous chromosomes in metaphase I increases the variation of chromosomes that segregate into gamete cells in meiosis.
3. The ability of homologous chromosomes to swap and exchange gene regions in meiosis contributes to genetic variation.
Explanation:
Meiosis has crossing over in prophase I which increases genetic variation, independent assortment in metaphase I, and resulting haploid cells by the end. The resulting haploid cells can fertilize other haploid cells, with a random nature. However, mitosis does not contribute to genetic variation. Also, meiosis results in haploid cells, not diploid cells or cells with an increase in genetic chromosome quantity.
__________ are water-soluble, complex glycoproteins that are secreted by goblet cells.
Answer:
mucin?
Explanation:
A rock layer's __ are is its age compared to the ages of other rock layers.
Answer
Explanation:
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HELP ILL MARK BRAINLYEST OR WHATEVER, PELASE
A medical researcher finds a strain of bacteria that has cause infections in several patients. At time 0 hours, the researcher placed 100 bacteria on an agar plate to grow. Assuming the bacteria are growing exponentially, at a growth rate of 0.3, what is the population predicted after 5 hours?
Formula for Exponential Growth:
N=N0e^rt
Answer:
500 bacteria
Explanation:
There are many reasons why the use of oil needs to be managed carefully. Which of the following is not one of these reasons?
A- burning oil contributes to acid rain and the greenhouse effect
B- Oil was created by plants and animals
C- Oil spills at sea babe killed many marine animals
D- There are only limited supplies of oil in the earth
Explanation:
letter b.oil was created by plants and animals diyan po sagot
what quanity measures the amount of matter in an object
volume
temperature
Mass
Density
difference between optometrist and ophthalmologist
Answer:
What Is the Difference Between an Optometrist and an Ophthalmologist?
1. Optometrists- Optometrists examine, diagnose, treat, and manage diseases and disorders of the eye. ...
2. Ophthalmologists- Ophthalmologists are medical doctors (M.D) who diagnose and treat all eye diseases, perform eye surgery, and prescribe eyeglasses and contact lenses.
check all that are considered BIOTIC
Answer:
Grass
Lady Bug
Mushroom
Pig
Explanation:
Biotic means things that are alive or were once alive. Soil is tricky, but it is mostly made up of rock and minerals, so most people consider it abiotic.
Answer:
grass
lady bug
pig
mushroom
How do substances like CO2 and water move in and out of the cell ?Discuss.
Plz Answe It Guys
Answer:
It is by the process diffusion from the region of concentrated region to low concentrated one.concentration of carbon di-oxide and water is higher in external environment than that inside the cell, CO2and water moves inside the cell.
Explanation:
What is required to carry out fermentation or anaerobic respiration
Answer:
oxygen is required
Answer:
As oxygen is not required, fermentative organisms are anaerobic. Many organisms can use fermentation under anaerobic conditions and aerobic respiration when oxygen is present
Explanation:
hope it helps u..Mark me the Brainliest pls
the _______ suture is the articulation between the occipital bone and both parietal bones.
?!is brainly asleep for something, why is nobody answering my question???:((( Compare and contrast aerobic and anaerobic respiration. Which process yields more ATP? What’s the final electron acceptor in each process?
10 POINTS!! Strong conductivity of plasma allows it to act and react as ______________ and ____________ fields.
Finish the sentence.
Answer:
Strong conductivity of plasma allows it to act and react as electric and magnetic fields.
Heelppp meeeeeeeee pleeeaaseee
Answer:
even me I don't kno haha lol
are eukaryotic cells more or less complex than prokaryotic
Answer: More
Explanation:
Eukaryotic cells are more complex than prokaryotic cells.
Eukaryotic cells usually contain multiple cell organelles (such as the nucleus, mitochondria, Golgi body) with many different functions.
Prokaryotic cells however are usually simple atoms with the only major organelles mostly being ribosomes for protein synthesis.
3(4x-2)=30 plz help me its due today
Explanation:
3(4x-2)=30
12x-6=30
collect like terms
12x=30+6
12x=36
x=36/12
x=3
Answer:
x = 3
Explanation:
3(4x-2)=30
Distribute
12x-6=30
Add 6 to both sides
12x=36
Divde by 12 on both sides
x=3
which muscle of the wrist and fingers is a deep anterior flexor?
Answer:
Together the flexor pollicis longus, pronator quadratus, and flexor digitorum profundus form the deep layer of ventral forearm muscles. The muscle is named from Latin, meaning 'deep bender of the fingers'.
Explanation:
The muscles are at the wrist and fingers are flexor pollicis longus, pronator quadratus, and flexor digitorum profundus from the deep layer of ventral forearm muscles.
What are muscles?
The muscle is named from Latin, meaning 'deep bender of the fingers'. Three layers make up the muscles in the forearm's anterior compartment:
Flexor carpi ulnaris, palmaris longus, flexor carpi radialis, and pronator teres are superficial muscles. flexor digitorum superficialis, intermediate.Deep: pronator quadratus, flexor pollicis longus, and flexor digitorum profundus.This muscle group is responsible for the flexion of the fingers, wrist, and forearm pronation.
Except for the flexor carpi ulnaris and the medial half of the flexor digitorum profundus, which are innervated by the ulnar nerve, they are mostly innervated by the median nerve and receive vascular supply from the ulnar artery and radial artery.
Therefore, The muscles are at the wrist and fingers are flexor pollicis longus, pronator quadratus, and flexor digitorum profundus from the deep layer of ventral forearm muscles.
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PLZ HELP!! so i THINK the answer is Proline-Threonine, but i want to be sure its correct. The picture for the question is below! ;)
Answer:
Well im also not sure but I think it is Proline-Threonine
Explanation:
Can you pls comment the question i cant rlly see it when i see it clearly i might be able to give you the correct ans
I need help please……………….
Answer
K a. is photosynthesis
#3 a. is structure
State the type of involuntary action shown by the flow chart
Answer:
Explanation: please mark me as brainlist THANK YOU
Helppppp pls ASAP plssssssss
I believe the Answer is A
because Elaborative Rehearsal is a way to more effectively memorize information and maintain it in your long-term memory. By making associations between the new information you're trying to learn and the information you already know, you're making your brain process the information in a more in-depth way.
Natural selection is the unequal survival that results from the presence or abrenes of
a. cell walls.
b. particular traits.
C. learned behaviors.
d. breeding
which stains are used to visualize structures in the bacterial cell wall
Answer: Acid-fast and Gram
Explanation:
The gram stains peptidoglycan and the acid-fast stain stains mycolic acid, which are both in the cell wall.
Some foods we eat contain toxins or poisons. Explain why we do not normally suffer from the effects of these toxins. Do not discuss bacteria.
Answer:
Some natural toxins can be formed in food as defense mechanisms of plants, through their infestation with toxin-producing mould, or through ingestion by animals of toxin-producing microorganisms.
Natural toxins can cause a variety of adverse health effects and pose a serious health threat to both humans and livestock. Some of these toxins are extremely potent.
Adverse health effects can be acute poisoning ranging from allergic reactions to severe stomachache and diarrhoea, and even death.
Long-term health consequences include effects on the immune, reproductive or nervous systems, and also cancer.
A scientific expert committee jointly convened by WHO and the Food and Agriculture Organization of the United Nations (FAO) – called JECFA – is the international body responsible for evaluating the health risk from natural toxins in food.
International standards and codes of practice to limit exposure to natural toxins from certain foods are established by the Codex Alimentarius Commission based on JECFA assessments.
this biome is found around the equator and is home to a large amount of biodiversity
Answer:
Tropical rainforests
Tropical rainforests are found right around the equator. Some argue that a uniform climate in regards to temperature is important for biodiversity. The amount of available energy or productivity is also thought to contribute to diversity, and tropical rainforests have a large amount of both.
Explanation:
Name the juice stored in the gall bladder
Answer: The juice stored in the gallbladder is called "Bile".
Which statement is correct?
electrons of a neutral atom always equals the number of protons
neutrons always equal the number of protons
atomic weight is identical to atomic mass
neutrons always equal the number of electrons
-8(y+2)=32 plz help its due today
Answer:
y=-6
Explanation:
Assuming we're solving for y... we should isolate y.
[tex]-8(y+2)=32\\-8y-16=32\\-8y=48\\y=-6[/tex]
Answer:
-6
Explanation:
Write -8(y + 2) = 32 in expanded form.
-8y - 16 = 32
Now, find the value for y.
Do the inverse of subtraction to add 16 to both sides.
-16 + 16 cancels out.
32 + 16 = 48
Now you have the equation.
-8y = 48
Solve for y. To do that do the inverse of multiplication and divide both sides by 8. -8y divided 8, 8 and 8 cancels out. Leaving you with -y. Then divide 48 by 8, which is 6.
Finally, you should have -y = 6 which is the same thing as y = -6. So therefore, -6 is the value for y.
which statement accurately describes a cross-sectional study?
Answer:
Defining Characteristics of Cross-Sectional StudiesThe study takes place at a single point in time.It does not involve manipulating variables.It allows researchers to look at numerous characteristics at once (age, income, gender, etc.)It's often used to look at the prevailing characteristics in a given population.Cross-sectional studies help researchers to observe a number of characteristics at a single time.
What are cross-sectional studies?The study of data collected by the study of a population from a single point in time is referred to as a cross-sectional study. The participants for this kind of study are selected from the population under observation.
The participants have to meet certain criteria depending on the various variables that are of interest in the particular study.
This is a common kind of study used in the field of developmental psychology. This method is also used in areas like education, social science, etc.
These kinds of studies are categorized as observational studies. Their research falls under the category of descriptive research. This means that they can only report the occurrence of a phenomenon and not its cause.
Therefore, cross-sectional studies are used by researchers to observe a number of characteristics at a single time.
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Item 1
Item 2
Researchers determine the population of phytoplankton in an area of the ocean is significantly decreased compared to the
previous year. What can they conclude from this observation? (1 point)
Item
o
The plankton as a carbon sink will be less than expected, but the plankton as a carbon source will be greater
than expected
Item
Item
O The plankton as a carbon sink and as a carbon source in the area will be less than expected.
O The plankton as a carbon sink and as a carbon source in the area will be greater than expected
о
The plankton as a carbon sink will be greater than expected, but the plankton as a carbon source will be less
than expected
O Type here to search
BA
Answer:
the plankton as a carbon sink and as a carbon source in the area will be less than expected.
Explanation:
It's because its less expected
The conclusion that can be delivered with the help of this observation is that the plankton as a carbon sink and as a carbon source in the area will be less than expected. Thus, the correct option for this question is B.
What are Phytoplanktons?Phytoplankton may be defined as the type of organisms that are found in the aquatic habitat. These organisms are the producers of this habitat and are autotrophic in nature. These organisms are identical to terrestrial plants in the fact that both have chlorophyll.
According to the context of this question, the carbon utilized by the phytoplanktons during photosynthesis is extremely high which means the carbon sink and carbon source are well maintained.
But when the population of phytoplanktons is reduced in the next year, it means that the carbon sink and carbon source in the area will be less than expected.
Therefore, the correct option for this question is B.
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