Question

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20. Which of these statements describes genetic drift?
A) the change in a population's genes due to individuals leaving the population
B) the change in a population's allelic frequency due to better survival and reproduction
C) any change in a population's gene pool
D) the change in a population's alleles due to chance

Answer 1

Answer:

I also say D - The change in a population's alleles due to chance

Answer 2

The change in a population's alleles due to chance. Thus, the correct option is D.

What is genetic drift?

Genetic drift is the change in the frequency of an existing gene variant in a population due to random chance. Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation.

Consider a population of rabbits with brown fur and white fur, white fur being the dominant allele. Due to genetic drift, only the brown population might remain, with all the white ones eliminated. A couple with brown and blue eyes have children with brown or blue eyes.

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