Question

Population bottlenecks and founder effects

A.have opposite effects on population variation

B.both lead to genetic drift, which reduces variation in the population

C.both result in genetic variation due to extreme conditions

D.both result in an increased mutation rate in the population

Answer 1

Answer: B: both lead to genetic drift which reduces variation in the polulation.

When the size of a population is decreased by atleast one generation, it is called bottleneck. When few members of the original population begin a new colony, it is called founder effect. Founder effect thus would have decreased genetic variation from the original population.