Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 18, Problem 4RQ
Which scientific concept did Charles Darwin and
Alfred Wallace independently discover?
- mutation
- natural selection
- overbreeding
- sexual reproduction
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Darwin's theory of natural selection forms the basis of our understanding of evolution, but it was incomplete. He did not know the mechanism that produces variation.
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What is the difference between artificial selection and natural selection? How did Darwin's studies and experiments with artificial selection help him articulate how natural selection works? Provide an example and a personal reflection on something new you learned or found particularly interesting on this topic.
What was Darwin’s theory of natural selection? What evidence since Darwin’s day confirms his theory?
Chapter 18 Solutions
Biology 2e
Ch. 18 - Figure 18.14 Which is most likely to survive,...Ch. 18 - Figure 18.22 If two species eat a different diet...Ch. 18 - Figure 18.23 Which of the following statements is...Ch. 18 - Which scientific concept did Charles Darwin and...Ch. 18 - Which of the following situations will lead to...Ch. 18 - Which description is an example of a phenotype? A...Ch. 18 - Which situation is most likely an example of...Ch. 18 - Which situation would most likely lead to...Ch. 18 - What is the main difference between dispersal and...Ch. 18 - Which variable increases the likelihood of...
Ch. 18 - What is the main difference between autopolyploid...Ch. 18 - Which reproductive combination produces hybrids?...Ch. 18 - Which condition is the basis for a species to be...Ch. 18 - Which situation is not an example of a prezygotic...Ch. 18 - Which term is used to describe the continued...Ch. 18 - Which components of speciation would be least...Ch. 18 - If a person scatters a handful of garden pea plant...Ch. 18 - Why do scientists consider vestigial structures...Ch. 18 - How does the scientific meaning of “theory” differ...Ch. 18 - Explain why the statement that a monkey is more...Ch. 18 - Why do island chains provide ideal conditions for...Ch. 18 - Two species of fish had recently undergone...Ch. 18 - Why can polyploidy individuals lead to speciation...Ch. 18 - What do both rate of speciation models have in...Ch. 18 - Describe a situation where hybrid reproduction...
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- What observations that Darwin made on his round-the-world voyage influenced his later thoughts about evolution?arrow_forwardWhat two problems slowed the acceptance of Darwins theory among scientists?arrow_forwardCharles Darwin proposed that evolution could be explained by the differential reproductive success of organisms that resulted from their naturally occurring variation. Darwin called this process (a) coevolution (b) convergent evolution (c) natural selection (d) artificial selection (e) homoplasyarrow_forward
- Which of the following is not part of Darwins mechanism of evolution? (a) differential reproductive success (b) variation in a population (c) inheritance of acquired (nongenetic) traits (d) overproduction of offspring (e) struggle for existencearrow_forwardWhich statement about natural selection is true? Natural selection only happens to animals. Natural selection produces animals fit for their environment. Evolution causes natural selection. Natural selection produces animals that are faster and stronger.arrow_forwardDarwin expressed that there was a force in nature that worked like an artificial selection. How is artificial selection different from Darwin’s idea of natural selection?arrow_forward
- Which statement describes a part of Darwin’s theory of evolution? Variation is not essential to evolution. Too few offspring are produced in any population. Organisms with favorable variations tend to survive. Unfavorable mutations cause an increase in populations.arrow_forwardWhich is NOT a component of evolution by natural selection? Group of answer choices Organisms compete for resources. Organisms adapt due to environmental changes. Species are fixed. Individuals have different reproductive success.arrow_forwardDarwin has been often credited with discovering evolution. Why is this not right?arrow_forward
- The most important evidence that Darwin used to develop his theory of natural selection came from ___. his boyhood neighborhood in England the Galapagos Islands Australia & New Zealand the Argentine pampas South Americaarrow_forwardFrom the Movie what Darwin Never Knew. Provide specific examples of evolution and natural selection from the movie .arrow_forwardWhat Darwin Never Knew. What experiences / observations on Darwin’s HMS Beagle trip influenced his work? List all observations from nature development etc that were important for Darwin when he developed his theory of evolution by natural selection.arrow_forward
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