Question

Which of the following scenarios will decrease the genetic variation of a population?(1 point)
Responses

a mutation in a chromosome makes it more likely to undergo genetic recombination
a mutation in a chromosome makes it more likely to undergo genetic recombination

a population of birds suddenly decrease their frequency of sexual reproduction
a population of birds suddenly decrease their frequency of sexual reproduction

an individual works out, increasing their muscle mass
an individual works out, increasing their muscle mass

a mutation alters the sequence of a gene resulting in a new allele
a mutation alters the sequence of a gene resulting in a new allele

Answer 1

"a population of birds suddenly decrease their frequency of sexual reproduction"

Reason: sexual reproduction (meiosis, recombination, and independent assortment) generates new allele combinations and maintains genetic variation. Decreasing sexual reproduction reduces those sources of variation.