Question

question 2 of 25
imagine a population of beetles. yellow beetles are easier for birds to see and eat. gray beetles blend into their surroundings, so they are less visible to birds than yellow beetles. as a result, gray beetles are more likely to survive and reproduce, enabling the allele for gray coloration to be passed on to the next generation. this increases the frequency of alleles for gray coloration in the population.

which evolutionary process does this scenario describe?
○ natural selection
○ mutation
○ genetic drift
○ migration

Explanation:

The scenario describes differential survival and reproduction based on a heritable trait (coloration): gray beetles (better camouflaged) survive and reproduce more, increasing their allele frequency. This matches natural selection, where environmental pressures favor advantageous traits. Mutation introduces new alleles, genetic drift is random change, and migration involves movement—none fit here.

Answer:

natural selection