Question

Which event describes a change where evolution has happened? An allele frequency changes in a population. A white-eyed fly is born into a population of brown-eyed flies. A species of tree dies out. A school of fish moves to a new environment.

Answer 1

A white-eyed fly is born into a population of brown-eyed flies.

Step-by-step explanation:

In the example, a new mutation (i.e., white-eyes) has appeared in the progeny. In the case that this new mutation has adaptive value, it will be transmitted across generations and therefore will increase its frequency in the population