BIOLOGY MIDDLE SCHOOL

Which is an example of genetic drift?A. The allele frequency of a population changes due to a bottleneck
effect.
B. Disruptive selection divides a population into two new species.
C. Selective breeding creates a new species of dog.
D. A mutation spreads rapidly through a small population.

Answers

Answer 1
Answer:

The example of genetic drift is A. The allele frequency of a population changes due to a bottleneck effect.

What is a genetic drift ?

Genetic drift refers to random fluctuations in the frequency of alleles (variants of a gene) in a population over time. This can occur due to various factors, such as a reduction in population size or migration of individuals between populations.

The bottleneck effect is a type of genetic drift that occurs when a population experiences a sharp reduction in size, which can reduce the genetic diversity of the population. This can result in certain alleles becoming more common or being lost altogether, even if they were not necessarily more advantageous or disadvantageous for survival.

Disruptive selection (option B) and selective breeding (option C) are mechanisms of natural and artificial selection, respectively, and do not necessarily involve random fluctuations in allele frequencies.

Hence,  A mutation spreading rapidly through a small population (option D) could be an example of genetic drift if it results in a change in allele frequency, but the fact that it spreads rapidly suggests that it may be under the influence of natural selection instead.

Learn more about genetic drift at :

brainly.com/question/12985618

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Answer 2
Answer: A. The allele frequency of a population changes due to a bottleneck.

This is because genetic drift happens because of chances events such as founder effect of bottleneck effect

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Answer:

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