Exam 13: How Populations Evolve

The original source of genetic variation that serves as the raw material for natural selection is ________.

The common house mouse species,Mus musculus,has the following taxonomic classification: Mus,Muridae,Rodentia,Mammalia,Chordata,Animalia,Eukarya.Which part of the name is the Family?

The total collection of alleles in a population at any one time makes up that population's ________.

Genetic drift is the result of ________.

The similarity of the embryos of fish,frogs,birds,and humans is evidence of ________.

Which of the following is a population?

Scenario Questions Read the following scenario to answer the following questions. 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 ________.

Natural selection ________.

Natural selection generally results in ________.

Homology is evidence of ________.

In the Hardy-Weinberg formula,what does p² represent?

Natural selection can be defined as ________.

Which of the following is most likely to decrease genetic variation?

After surviving a bottleneck,a population recovers to the point where it consists of as many individuals as it did prior to the bottleneck.Which of the following statements is most likely to apply to this population?

Gene flow is accomplished by ________.

Which of the following is an example of sexual selection?

Which of the following is an example that results from directional selection?

Which of the following examples results from disruptive selection?

Which of the following is NOT a requirement of natural selection?

While on the Beagle,Darwin was influenced by a book by Charles Lyell that suggested that Earth was ________ and sculpted by geologic processes that ________ today.