Which of the following describes the theory of common descent? Which of the following describes the theory of common descent? All living things have undergone speciation as a result of changes in the environment All living things evolved independently All living organisms are descendants of a single ancestor Some organisms have evolved more than the other organisms
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Common descent is a scientific theory that posits that all living organisms on Earth are descendants of a single common ancestor or ancestral gene pool. Show more…
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The theory of common descent states that all modern organisms A. can change in response to environmental change: B. descended from a single common ancestor, C. descended from one of many ancestors that originally arose on Earth; D. have not evolved; E. can be arranged in a hierarchy from "least evolved" to "most evolved."
Which of the following is not consistent with evolutionary theory? A. All living organisms share a common ancestor; B. The environment affects which organism survives to reproduce; C. Natural selection always favors the same traits, regardless of environment; D. Species change over time.
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Which of the following observations is not part of the theory of natural selection? A. Populations of organisms have more offspring than will survive; B. There is variation among individuals in a population; C. Modern organisms are unrelated; D. Traits can be passed on from parent to offspring; E. Some variants in a population have a higher probability of survival and reproduction than other variants do.
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