In 1814, a few dozen british colonists founded a settlement on tristan da cunha, which is a group of small islands in the atlantic ocean. one of these individuals carried a recessive allele for retinitis pigmentosa, a retinal degeneration disorder. by the 1960s, the frequency of this allele was ten times higher on tristan da cunha than in the original population. this is an example of which genetic effect?

Genetic drift (also known as allelic drift or the Sewall Wright effect)

Explanation:it occurs due to change in the frequency of an existing gene variant (allele) in a population due to random sampling of organisms.

The correct option is :

F attract insects to the community

Explanation:

Primary succession can be described as a succession which occurs in areas where there was no form of life before or any type of life from before had been completely eradicated. The first kind of organisms to grow on this land are the lichens and mosses. This is because lichens have the ability to breakdown small rocks. As a result, the soil is made which supports the growth of small flowering plants. These flowering plants will attract insects.