Arecessive lethal gene exists in a population and remains for several generations which women could have passed the recessive lethal allele to offspring but not have the disease herself

a woman who is homozygous dominant for the gene

a women who is homozygous recessive for the gene

a women who is heterozygous for the 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

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer