Mechanisms of Evolution and Natural Selection

Adaptations can be:

• camouflage

• ability to survive cold weather

• hunting skills

• all of the above

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A yellow morph and green morph of an insect lives in the rainforest canopy. You would expect:

• the green population to increase and the yellow to decrease

• both populations should stay the same

• both populations will increase

• the green population to decrease and the yellow to increaseThis is a wrong answer

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Why are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.

• Because they come from dominant alleles.

• Because they come from recessive alleles.

• Because the organism knew it needed that trait, survives, and passes it on.

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Mutations are a change in what?

• DNA

• tRNA

• protein

• rRNA

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Why is the mouse population changing over time?

• The light mice can reproduce more successfully than the dark mice
• The hawks eat more dark mice than light mice because the dark mice taste better
• The hawks eat more light mice than dark mice because they can see the light mice more easily
• The hawks eat more dark mice than light mice because they can see the dark mice more easily

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Over the years, white mice became extinct and darker mice survived. This is

• stabilizing selection

• directional selection

• disruptive selection

• due to exercise

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Average phenotypes are favored in the environment, while extremes have lower survival rates.

• seasonal selection

• distruptive selection

• directional selection

• stabilizing selection

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All the possible gene combinations in a population.

• allele

• gene pool

• genome

• mitosis

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Changes in the gene pool over time.

• Mitosis

• Genetic Variation

• Gene Pool

• Genetic Drift

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Organisms of the same species can no longer interbreed therefore creating two species.

• Gene Pool

• Genetic Drift

• Gene Frequency

• Speciation

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