AP Bio Unit 7 Natural Selection

Large-brained female guppies will chose the more attractive male guppy. This process is

• sexual selection

• artificial selection

• allele drift

• frequency-dependent selection

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Which of the following are adaptations?

• an opposable thumb

• stomata on the underside of leaves instead of top of leaf

• refraining from handfeeding bears

• all of these

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Which of the following are abiotic factors?

• sunlight, water and plants

• plants and animals

• sunlight, water and rocks

• water, rocks and trees

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A population in Hardy-Weinberg equilibrium

• has a large population size, selection, large population size, and absence of migration

• has no net mutations, but selection, large population size and random mating

• has migration, no selection, random mating, large population size, and no net mutations

• has no net mutations, no selection, random mating, large population size and absence of migration

When a population exhibits Hardy-Weinberg equilibrium

• the genotype frequencies of a population do not change

• the genotype frequencies of a population do change

• the allele frequencies of a population do change

• the frequency of migration and selection change

A population bottleneck is a type of

• genetic drift and includes founder effect

• allele drift and includes founder effect

• genetic drift and allele drift

• genetic drift and allele drift and can include founder effect

The sugar glider is native to Australia, while the Flying squirrel is native to North America. The best explanation for their similar appearance is

• convergent evolution

• common ancestor

• divergent evolution

• genetic drift

Fitness is an organism's capacity to

• survive and mate

• reproduce and mate

• survive and reproduce

• live a long time

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Which of the following is a commensalistic relationship?

• Birds eating insects stirred up by cattle

• A flea living on a fox

• A clownfish living in a sea anemone

• A woolly bat sleeping in a pitcher plant

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DNA's half-life is 521 years. After 2 half-lives (1042 years)

• All the DNA will be gone

• All of the genes will be gone

• 1/4 of the DNA will be gone

• 1/4 of the DNA will be intact