Question

Conditions under which natural selection occurs in a beetle population are described in the table below:

Natural Selection Description
Condition Description
A Green and brown beetles exist in a population
B Brown colored beetles escape predation to live longer

Which factor contributes to natural selection for each condition?
Group of answer choices

Condition A and Condition B represent competition.

Condition A and Condition B represent inherited variation.

Condition A represents inherited variation, and Condition B represents differential reproductive success.

Condition A represents differential reproductive success, and Condition B represents inherited variation.

Answer 1

Answer:

Natural selection can cause microevolution (change in allele frequencies), with fitness-increasing alleles becoming more common in the population.

Fitness is a measure of reproductive success (how many offspring an organism leaves in the next generation, relative to others in the group).

Natural selection can act on traits determined by alternative alleles of a single gene, or on polygenic traits (traits determined by many genes).

Natural selection on traits determined by multiple genes may take the form of stabilizing selection, directional selection, or disruptive selection