Scientists discovered that this enhancer associated with hair color has a binding site for a particular transcription factor. one form of the binding site has the sequence cactaaag and is associated with dark hair, and the other form of the binding site has the nearly identical sequence cgctaag and is associated with blond hair. how could these two nearly identical enhancer binding sites lead to different rates of initiating transcription of the regulated gene?

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

Which of the following is a common danger of commercial fishing?

Ais a group of individuals of the same that exist together in the same place at the same time