<span>Identical twins may have the same DNA, hence their nature will be the same. However, the character of the different twins may vary because of variations in nurture. This is described as epigenetics which is the effect of environmental stimuli on genetic material without its change in sequence. This affects gene expression due to the differences in DNA methylation and histone modification profiles between the twins. </span>
Answer:
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Explanation:
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Answer:
Haploid describes a cell that contains a single set of chromosomes. The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes. In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.
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The answer is speciation by geographic isolation. When the population of a species gets separated due to reasons such as continental drift, mountains, canyons, etc. then each separated group of population may survive and adapt to their respective environment leading to speciation. These barriers do not allow the evolving populations to interbreed initially and over time when they evolve into different species they become completely reproductively isolated.
