Evolution and Genetics Review

Darwin's explanation for evolution was dependent on which scientific concept?

• the ability of organisms to learn

• the significance of social behaviors to survival

• variations in a population

• the relationship between size and survival

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which best helps scientists determine the age of fossils?

• physical traits

• genetic make-up

• reproductive strategy

• radiometric dating

studying the differences between fossils and modern organisms helps scientists understand the

• role of mutation in life functions

• primary function of key macromolecules

• adaptation of organisms through acquired traits

• evolution of organisms over time

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five species of frogs that live in separate habitats within 5 non-overlapping ranges along the Mississippi river share a common ancestor. Which process is most likely responsible for the formation of these five distinct species?

• physiological isolation

• geographic isolation

• behavioral isolation

• reproductive isolation

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the study of embryos and other early stages of development can help in the classification of living things, past and present, by providing clues about the

• prokaryotic species that are at risk for extinction

• rate of appearances of new terrestrial organisms

• barriers to mating among marine populations

• common ancestry among vertebrate species

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the eastern meadowlark and the western meadowlark are two closely related bird species. the two species avoid interbreeding because they have different mating songs. This is an example of

• adaptive radiation

• behavioral isolation

• geographic isolation

• artificial selection

According to this fossil record chart, trilobites probably lived in what ancient environments ?

• shallow seas

• mountaintops

• freshwater lakes

• terrestrial forests

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An early biological theory stated that a change in a population can occur when organisms with favorable variations for a particular environment survive and pass these variations on to the next generation. This theory is better known as the theory of

• natural selection

• punctuated selection

• variation

• acquired characteristics

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Biologists surveyed four islands in a chain near a continent. They identified species found on the mainland and those species that were unique to each island. Based on these results, which island is probably farthest from the mainland?

• 1

• 2

• 3

• 4

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Monarch butterflies are toxic to birds because monarch caterpillars eat milkweed. Viceroy butterflies closely resemble monarchs, but are not toxic since the caterpillars do not eat milkweed. This similarity in appearance developed because viceroy butterflies that closely resemble monarchs are

• less likely to be eaten by birds

• more likely to mate with monarchs

• more likely to eat milkweed

• less likely to produce offspring

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