Jamie inherited a sickle cell trait from her mom and her dad which resulted in her having sickle cell anemia She requires blood transfusions regularly to keep her cells supplied with the oxygen they need to The sequence below shows a part of the genetic code for the HBB Gene which provides the instructions for making the beta-globin protein that efficiently binds to oxygen
best represents the amino acid sequence found in normal adults with the HBB gene?

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

Structures in cells that carry out specific functions.

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