Question

founder effect
which statement is not true about the founder effect?
multiple choice
the founder effect occurs when a population is subjected to near extinction and then recovers so that only a few alleles are left in survivors.
it is a form of genetic drift.
founding members contain a tiny fraction of the alleles found in the original population.
it produces a high frequency of some rare alleles in a small isolated population.

Explanation:

The founder - effect occurs when a small group of individuals becomes separated from a larger population and establishes a new population. This new population's gene pool is a subset of the original population's gene pool. It is a form of genetic drift. The founding members have a portion of the alleles of the original population and can lead to a high frequency of some rare alleles in the new small isolated population. The description in the first option refers to a bottleneck effect (not founder - effect) which happens when a population is severely reduced in size and then recovers.

Answer:

The founder effect occurs when a population is subjected to near extinction and then recovers so that only a few alleles are left in survivors.