Review Practice: Evolution

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Concept illustrated in the flowchart

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natural selection

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Possible conclusion regarding ancestral horses A and B based on the family tree of the modern horse and knowledge of biology.

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A was better adapted to changes that occurred during the Pliocene Epoch than was B.

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Inference about the evolution of modern horses based on Miohippus (browser) and Merychippus (grazer).

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Pliohippus had teeth adapted for grazing

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The bones in the forelimbs of three mammals are shown below. For these mammals, the number, position, and shape of the bones most likely indicates that they may have

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developed from the same earlier species

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Which era is known as the 'Age of Reptiles'?

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Mesozoic

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Which process is correctly matched with its explanation?
Options:
extinction - adaptive characteristics of a species are not adequate
natural selection - the most complex organisms survive
gene recombination - genes are copied as a part of mitosis
mutation - overproduction of offspring takes place within a certain population

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extinction - adaptive characteristics of a species are not adequate

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1859: Darwin publishes 'On the Origin of Species by Natural Selection'. This information is most closely associated with:

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an attempt to explain the structural similarities observed among diverse living organisms

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The Florida panther, a member of the cat family, has a population of fewer than 100 individuals and has limited genetic variation. What is a valid inference based on this information?

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Over time, these animals will become less likely to survive in a changing environment.

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Areas with many different niches will most likely have

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great diversity among the organisms

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Scientists in the United States, Europe, and Africa have now suggested that the hippopotamus is a relative of the whale. Earlier studies placed the hippo as a close relative of wild pigs, but recent studies have discovered stronger evidence for the connection to whales. This information suggests that

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scientific explanations are tentative and subject to change