Mendel’s law of independent assortment is best demonstrated by which of the following observations?
A) When two sexually reproducing organisms produce offspring, each offspring has a unique set of genes.
B) Organisms that reproduce asexually have offspring that are genetically identical to the parent offspring.
C) Genetic mutations can alter some of the traits of an organism, while others remain unchanged.
D) After a unicellular organism divides, each of the daughter cells is capable of living independently of the other.

Match the types of competition to their descriptions.

Are produced in the light reactions and used in the calvin cycle. a)nadh and atp b)electrons and sugar c)nadt+ and adp d)sugar molecules

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. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection