Question

question 48
genetic bottlenecks can be caused by ___.
a all of the above.
b flood.
c extreme temperatures.
d overfishing.
e hunting.
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Explanation:

A genetic bottleneck occurs when a population's size is drastically reduced, leading to a loss of genetic diversity. Floods (B) are natural disasters that can kill many organisms. Extreme temperatures (C) can stress or kill species. Overfishing (D) reduces fish populations. Hunting (E) can deplete animal populations. Since all these (B - E) can cause population reductions leading to genetic bottlenecks, "All of the above" (A) is correct.

Answer:

A. All of the above.