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Genetic drift has a stronger impact on small populations compared to larger populations because:

Option: 1

Small populations have more favorable variations.


Option: 2

Small populations experience higher mutation rates.


Option: 3

Genetic drift is a random process and chance events can have a greater effect on small populations.


Option: 4

Small populations have a higher gene flow with other populations.


Answers (1)

best_answer

Genetic drift is a random process that occurs due to chance events rather than natural selection. In small populations, the effect of genetic drift is more pronounced because chance events can have a greater impact on the gene frequencies. With fewer individuals, the random loss or fixation of alleles can occur more easily, leading to significant changes in the genetic makeup of the population. In larger populations, the effects of genetic drift are diluted due to a larger gene pool and a higher chance of preserving genetic diversity through reproduction. Hence, option 3 is the correct answer. 

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Divya Prakash Singh

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