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 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.
It has temporarily decreased, so disadvantageous traits are less likely to be passed on.
1 answer
The correct statement is:
It has temporarily decreased, so disadvantageous traits are more likely to be passed on.
A bottleneck effect reduces the genetic diversity of a population by drastically decreasing its size, which leads to a smaller gene pool. This reduction means that there is a higher chance that disadvantageous traits may be retained and passed on through the remaining population.
