Question

question
which of the following is the correct definition of biological evolution?
select an answer
a. biological evolution is—most directly—a change in allele frequencies in a population over time.
b. biological evolution is—most directly—a change in allele frequencies in a species over time.
c. biological evolution is—most directly—a change in allele frequencies in an individual over time.
d. biological evolution is—most directly—a change in allele frequencies in an ecological community over time.

Explanation:

Biological evolution is defined at the population level (not species, individual, or community). Allele frequency changes in a population over time is the correct definition. So option A is right.

Answer:

A. Biological evolution is—most directly—a change in allele frequencies in a population over time.