Question

Which mutation scenario will always lead to natural selection?(1 point)
Responses

a mutation causes a gene to become inactivated
a mutation causes a gene to become inactivated

a mutation causes an inactivated gene to be reactivated
a mutation causes an inactivated gene to be reactivated

a mutation causes a specific advantage within the population
a mutation causes a specific advantage within the population

a mutation causes a specific variation within the population
a mutation causes a specific variation within the population

Answer 1

Answer: "a mutation causes a specific advantage within the population."

Reason: natural selection acts on heritable variation that affects fitness. A mutation that confers an advantage will be favored and increase in frequency; simply causing variation or inactivating/reactivating a gene does not necessarily change fitness.