Question

Why would a population have a trait controlled by only one allele? Select all that apply.

Having a single allele makes it more likely that the population can survive environmental changes.

That exact trait is necessary in order for the organism to function properly.

The allele makes the population more diverse.

A small group of organisms becomes isolated and forms a new population.
is it a and c

Answer 1

Year late but for future people it's actually B and D.

Answer 2

Year late but Thank You :)