G6pd deficiency is an inherited condition in which the body doesn't have enough of the enzyme glucose-6-phosphate dehydrogenase, or g6pd, which red blood cells (rbcs) function normally. g6pd deficiency is most common in african-american males. many females are carriers. it is known that africa and the mediterranean basin are high-risk areas for the infectious disease malaria. researchers have found evidence that the parasite that causes malaria does not survive well in g6pd-deficient cells. how can you explain this? a )natural selection favors g6pd deficiency as compared to malaria. b) genetic drift is responsible for greater occurrence of g6pd deficiency in these regions. c) somatic mutations lead to g6pd deficiency in malaria-inflicted regions.

Why is a dominant allele called dominant

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

Read the following scenario to answer the following question. over the past 60 years, many amphibian species have experienced significant population declines, and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. when most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution