Question

A bottleneck event reduces the population of bears in one area by 80%. Which statement is correct about the bears’ gene pool? (1 point)
Responses

It has temporarily decreased, so disadvantageous traits are less likely to be passed on.
It has temporarily decreased, so disadvantageous traits are less likely to be passed on.

It has temporarily increased, so disadvantageous traits are less likely to be passed on.
It has temporarily increased, so disadvantageous traits are less likely to be passed on.

It has temporarily increased, so disadvantageous traits are more likely to be passed on.
It has temporarily increased, so disadvantageous traits are more likely to be passed on.

It has temporarily decreased, so disadvantageous traits are more likely to be passed on.
It has temporarily decreased, so disadvantageous traits are more likely to be passed on.

Answer 1

It has temporarily decreased, so disadvantageous traits are more likely to be passed on.

Explanation: A bottleneck sharply reduces population size and genetic diversity. With fewer individuals, genetic drift has a stronger effect, so harmful alleles can become more common by chance.