A species of bird has slight variations in its beak size and shape. Some individuals with bigger beaks are better at cracking seeds. Some individuals with narrower beaks are better at hunting for bugs. An invasive species is introduced that hunts all of the bug population, wiping out that food source for the birds, so all they are left with is seeds.

Question

In one to two sentences, explain how genetic variation from sexual reproduction can save this species from extinction.
(2 points)

Answer 1

Genetic variation from sexual reproduction can save this species from extinction by increasing the likelihood of individuals with larger beaks, better suited for cracking seeds, to be present in the population, allowing them to adapt and survive in the absence of their primary food source.