b. It causes some genes to be added to a population because there is a sharp decline in the population due to a natural disaster.
The bottleneck effect occurs when a population undergoes a sharp reduction in numbers, leading to a decrease in genetic diversity. This reduction in genetic diversity can result in the loss of certain alleles in the population. As the population recovers from the bottleneck, the genetic makeup of the population may be different from what it was before the event, leading to genetic changes in the population.
How does the bottleneck effect lead to genetic changes in a population of organisms?
a
It causes some genes to be added to a population because there is a small decline in the population due to a natural disaster.
b
It causes some genes to be added to a population because there is a sharp decline in the population due to a natural disaster.
c
It causes some genes to be removed from a population because there is a sharp increase in the population due to a natural disaster.
d
It causes some genes to be removed from a population because there is a sharp decline in the population due to a natural disaster.
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