Evolution and Natural Selection

Individuals undergo evolution.

• True

• False

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Eyes that can see in the dark is a(an) _______ inherited by nocturnal animals.

• adaptation

• acquired trait

• learned ability

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How does a species change over time?

• by adapting to the environment

• changes in the gene frequencies in a population

• acquiring new traits

• they do not change

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The pelvic bone of whales is not needed for movement within the water. This is an example of a(n) ______________ structure.

• vestigial

• analogous

• homologous

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The forelimbs of mammals have similar anatomy because these groups descended from a recent common ancestor. Their bone structure is an example of a(n) ______________ structure.

• vestigial

• analogous

• homologous

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Many different groups of organisms have wings, even though they do not share a recent common ancestor. This is because they evolved in environments with similar selective pressures. Wings are an example of a(n) ______________ structure.

• vestigial

• analogous

• homologous

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Which does NOT cause genetic variation?

• crossing over in meiosis

• mutations

• traits acquired during lifetime

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Below are the % similarities of DNA between whales and other species. Based on this, which are whales most closely related to?

• Pig, 68.4%

• Hippo, 83.4%

• Mouse, 38.4%

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Which best describes the phrase survival of the fittest?

• strongest in a population are most successful

• fastest in a population are most successful

• those that can survive and reproduce are most successful

• those that can live the longest are most successful

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What does Darwin's theory of evolution suggest?

• species change over time
• extinct species are not related to living species
• different species can interbreed
• animals that look alike are most closely related

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