A) The different variants of a trait available to a gene are called (1 point)

polygenic traits.
alleles.
phenotypes.
genotypes

alleles.

A) What is one similarity between genetic drift and gene flow? (1 point)

They are both caused by the migration of species.
They both cause a change in the frequency of traits in a population.
They are both caused by natural disasters, such as hurricanes.
They both occur in a population by chance.

They both cause a change in the frequency of traits in a population.