Genetic drift is one mechanism of evolutionary change. Which of the following best describes an example of genetic drift?

A.

A small population of frogs, which used to be brown and green, is now all green due to chance.

B.

Gazelles, which are preyed on by cheetahs, have gotten faster and more agile over time.

C.

The genetic variation between two populations of gorillas decreases due to interbreeding.

D.

Over time, birds acquired stronger beaks by opening and eating tougher nuts and seeds.

Question

Janiyah Mitchell

Biology

18 May, 00:34

Genetic drift is one mechanism of evolutionary change. Which of the following best describes an example of genetic drift?

A.

A small population of frogs, which used to be brown and green, is now all green due to chance.

B.

Gazelles, which are preyed on by cheetahs, have gotten faster and more agile over time.

C.

The genetic variation between two populations of gorillas decreases due to interbreeding.

D.

Over time, birds acquired stronger beaks by opening and eating tougher nuts and seeds.

+3

Answers (1)

Know the Answer?

Misael Madden · Answer 1

B) Random fluctuations in the gene frequencies within a population

Explanation:

Genetic Drift Examples. Genetic drift is a change in the frequency of an allele within a population over time. This change in the frequency of the allele or gene variation must occur randomly in order for genetic drift to occur ... Examples of genetic drift are more evident in smaller populations of organisms.