Question

The population grew and it appeared that the species would rebound when a disease suddenly wiped out the entire population. what is likely the primary reason for why this occurred?

Answer 1

Greater contact with humans, who passed on the disease is likely the primary reason why this occurred.

What do you mean by population bottleneck?

Specified, widespread violence or purposeful culling, human population planning, and other human actions such as famine, earthquakes, floods, fires, disease, and droughts can all cause population bottlenecks. Population bottlenecks can also occur owing to genetic bottlenecks. As a result, a smaller population with less genetic variety is left to transmit genes to future generations of offspring through sexual reproduction. Such events can limit the variation in a population's gene pool. Only when gene flow from another group happens or very slowly over time as random mutations take place, genetic diversity rises, but it still remains lower.

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