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.

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.

pstnonsonjoku pstnonsonjoku · Answer 2 · 2021-10-22T00:09:00+02:00

Genetic drift is best described by; "a small population of frogs, which used to be brown and green, is now all green due to chance."

Genetic drift is a phenomenon that occurs by chance. It implies the random or chance variation of the genes in a population. Genetic drift results in the possible loss of some alleles in the population. Gradually, a new population appears having different characteristics from the original population.

A typical example of genetic drift is; "a small population of frogs, which used to be brown and green, is now all green due to chance."

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