In a small group of people living in a remote area of Kentucky, there is a high incidence of "blue skin" a condition that results from a variation in the structure of hemoglobin. All of the 'blue skinned' residents can trace their ancestry to one couple, who were among the original settlers of the region. The unusually high frequency of 'blue skin' in the area is an example ofa. Mutation b. Natural Selectionc. Sexual Selectiond. Genetic Drifte. Heterozygote Advantage

d. Genetic Drift

Explanation:

Genetic drift, in Biology, is the change of the relative allele frequency of a population that occurs randomly over time. That is, the allele frequency of  the original population becomes changed overtime.

Genetic drift can be said to be caused or favored by several factors, and this could include, small population size, population experiencing bottleneck effect or the founder effect, movement of a gene into a population.

The case of unusual high frequency of "blue skin" that occurred in the small group of people living in the remote area of Kentucky can be said to be an example of genetic drift, as this trait were originated from one couple who migrated as one of the settlers into the region.

[ answer ]

foliated

[ explanation ]

foliation forms in a rock when pressure squeezes the rock together. the rock then has a design of many different color little lines. there are three types of foliated rock. the types are slate, schist, and gneiss. each type of foliated rock is different based on grain size and foliation characteristics. the lines appear when the rock has been under pressure.

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the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.