Traits, Survival, and Reproduction Quick Check
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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 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 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 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.
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1 answer
The correct statement regarding the bears' gene pool after a bottleneck event that reduces the population by 80% is:
It has temporarily decreased, so disadvantageous traits are more likely to be passed on.
A bottleneck event drastically reduces genetic diversity because only a small number of individuals contribute to the subsequent population, which leads to a decrease in the gene pool and can result in an increased likelihood of disadvantageous traits being passed on.
