Question

Genetic drift is most likely to occur in populations that are select . A select occurs when many members of a population die, leaving only a few survivors. The select may occur when a small group of individuals forms a new settlement. Random changes in allele frequencies are called select .

a) Large; bottleneck; bottleneck; μtations
b) Small; bottleneck; founder effect; μtations
c) Small; founder effect; bottleneck; adaptations
d) Large; founder effect; bottleneck; adaptations

Answer 1

Genetic drift is more likely in small populations and can occur due to the bottleneck effect, when many individuals die, or due to the founder effect when a new population is established. The correct answer is b) Small; bottleneck; founder effect; mutations.

Step-by-step explanation:

Genetic drift is a phenomenon that occurs in populations, more likely to happen in small populations. When a large portion of a population dies due to a catastrophe, leaving only a few survivors, this event is known as a bottleneck effect. On the other hand, when a small group of individuals leaves a larger population to start a new one, the genetic consequences of this are referred to as the founder effect.

The correct answer to the fill-in-the-blank question is b) Small; bottleneck; founder effect; and mutations. Random changes in allele frequencies due to the sampling of alleles from one generation to the next can also be affected by mutations, which are random changes in the DNA sequence of an organism.

Answer 2

Genetic drift occurs most notably in small populations and can be due to either the bottleneck effect or the founder effect, with random changes in allele frequencies being termed mutations. The correct answer is b) Small; bottleneck; founder effect; mutations.

Step-by-step explanation:

Genetic drift is most likely to occur in populations that are small; this is due to random changes in allele frequencies that have a more prominent effect in these populations.

A bottleneck effect occurs when many members of a population die, leaving only a few survivors with a potentially different genetic makeup than the original population.

On the other hand, the founder effect may occur when a small group of individuals forms a new settlement, which may also result in a different gene pool compared to the source population. Random changes in allele frequencies are called mutations, which can introduce new genetic variations.

Therefore, the correct answer to the student's question is b) Small; bottleneck; founder effect; mutations.