Question

Question
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.

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

make the answer sound like a high schooler

Answer 1

Sexual reproduction mixes genes so offspring vary in traits like beak size, and because some birds already have bigger, stronger beaks that can crack seeds, those birds survive and reproduce more after the bugs disappear. Over time the population shifts toward seed-cracking beaks instead of going extinct.