Question

If the finches that colonized the Galápagos from South America had different allele frequencies when compared to the parental population of South American finches, even before adapting to the new environmental condition on the Galápagos, this would have been an example of

genetic drift.

bottleneck effect.

founder effect.

A and B only.

A and C only.

Answer 1

The scenario described, where finches from South America colonize the Galápagos with a different set of allele frequencies compared to the original population, is an example of the founder effect, a specific type of genetic drift related to new colonies established by a few individuals.

Step-by-step explanation:

If the finches that colonized the Galápagos from South America had different allele frequencies when compared to the parental population of South American finches, even before adapting to the new environmental condition on the Galápagos, this would have been an example of founder effect.

The founder effect is a type of genetic drift that occurs when a new colony is established by a few members of the original population. This small group may carry allele frequencies that are not representative of the original large population, leading to genetic differences in the new population. In contrast, the bottleneck effect occurs when there is a significant reduction in population size due to events such as natural disasters, leading to a change in allele frequencies as a result of the population's reduction.

In this particular scenario, the correct answer would be the founder effect since it specifically describes the situation where a new population is started by a smaller group of individuals from a larger population. Therefore, the appropriate answer from the given options is C. founder effect.

Answer 2

This is an example of founder effect and genetic drift. The right answer is A and C only

Step-by-step explanation:

Genetic drift is a mechanism in the process of evolution in which the sampling error ( change in allele frequencies of population occur).

Here Genetic drift will lead to founder effect as colonization of species has taken place.

When a small population forms colones and does not contain the genetic diversity present in parental population. The movement from larger population to smaller population and having different gene frequencies is called Founder effect. The change in the alleles would lead to generation of same alleles and hence they will experience drift over a large period of time.