Question

An allele arises in a population that helps individuals digest cellulose. While the allele starts in only one organism, it increases in allele frequency because it allows organisms that carry it to reproduce more. What is this an example of

Answer 1

ANSWER: A NATURAL SELECTION.

EXPLANATION:

When allele has direct effects on the organism and the environment, it is termed natural selection. It either affects an organism positively by causing more DNA reproduction, leading to the increase in allele’s frequency, or negatively by decreasing it .

However, this shouldn't be mistakened for genetic drift, where allele increase or decrease is established in the random organisms that survived.