23. centromeres
25. mitosis
27. cancer
29. sister chromatid
31. tissues
Answer;
-Allele frequency change
In single-gene traits, natural selection can lead to allele frequency change.
Explanation;
-Allele frequencies can change over time within a single population, and frequently differ between populations. This change is due to four different processes: mutation, selection (natural and artificial), gene flow and genetic drift.
-Random forces lead to genetic drift. Sometimes, there can be random fluctuations in the numbers of alleles in a population. These changes in relative allele frequency, called genetic drift, can either increase or decrease by chance over time.
Quality of light is the limiting factor restricting phytoplankton to approximately the top ten feet of the ocean, rather than deeper
Explanation:
When sun rays pass through the water in the oceans, they are quickly diffused and cannot penetrate very deep into the deep water layers. Remember that phytoplanktons are photosynthetic organisms and hence require sunlight to manufacture their own food. They, therefore, cannot grwo in deeper layers of the oceans. They are only found in the photic zone.
The quality of light is especially of most importance and hence the major limiting factor. Red light, of longer wavelength, and which is the major wavelength of light that is used the most by photosynthetic organisms, diffuses very fast than blue light when it passes through water. Therefore the more reason phytoplankton is found in the top ten feet of the ocean, rather than deeper.
Learn More:
For more on phytoplankton check out;
brainly.com/question/8777727
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The correct answer of the given question above would be GENETICS. When peanut <span>seedlings were grown under identical conditions, the factor that could count for differences in height among the seedlings is GENETICS. Hope this answer helps you. Thanks for posting your question.</span>
Brain is the organ that is most sensitive to the absence of glucose in the blood. The glucose is needed by the neurons in the brain to carry out their functions. The neurons when deprived of glucose, start to slow down and die out of exhaustion. The lack of glucose can cause symptoms of hypoglycemia, wherein a person starts to experience hallucinations and suffers from excruciating pain in the joints of the bones.
