The answer is B) Genetic variation
Adaption, evolution, variation are all causes of natural selection.
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Mitosis
Advantages: It enables your cells to multiply quickly and produce sister chromosomes.
Disadvantages: There is little genetic variation, each generation faces the same diseases.
Meiosis:
Advantages: The crossing over of genes during meiosis results in individual variety, which is beneficial to the population's survival.
Disadvantages: It requires the use of two gametes.
The number of bases is no longer divisible by three. This results in a frame-shift, and all codons from the point of mutation will be affected.
