Question

Select from the choices below the statement that best describes the effect of the migration of individuals into a population.

a. Migration of individuals into a population generally increases the genetic variability within a population.
b. Migration of individuals into a population generally decreases the genetic variability within a population.
c. Migration of individuals into a population generally causes that population to diverge to the extent that it becomes a new species.
d. Migration of individuals into a population generally causes no change in the genetic variability within a population because it is a case of artificial selection.
e. Both a and c are correct.

Answer 1

Migration into a population generally increases its genetic variability through the introduction of new alleles, contributing to gene flow and adaptive evolution.

Step-by-step explanation:

The statement that best describes the effect of the migration of individuals into a population is: Migration of individuals into a population generally increases the genetic variability within a population. This is because migration introduces new alleles and can lead to changes in allele frequencies within a population, an example of gene flow. This process is not random and is different from mutation, which is a random process generating genetic variation. Migration can therefore increase the genetic diversity and potentially the adaptive evolution of a population.