Quiz 2 - 1. Which of the following is NOT an example of...

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1. Which of the following is NOT an example of macroevolution? A. The evolution of humans and chimpanzees from a common ancestor. B. The evolutionary course of Equidae (the family including horses and their relatives). C. The adaptive radiation of finch species in the Galapagos. D. The origin of tetrapod limbs from fish fins. E. The evolution of domestic dogs, ranging from chihuahuas to Great Danes. Macroevolution necessarily involves evolutionary change at or above the species level. Since the various breeds of domestic dogs are fully capable of interbreeding and producing viable offspring, these distinct breeds do not constitute new species. Hence, the emergence of new breeds of dogs as a result of artificial selection does not constitute an example of macroevolution. On the other hand, answers A through D all constitute changes occurring at or above the species level. 2. What is generally true of two very closely related species that have diverged from each other quite recently? A. They shared a common ancestor recently in evolutionary time. B. Genes are unable to pass from one species’ gene pool to the other’s gene
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This note was uploaded on 12/12/2010 for the course BISC 120 taught by Professor Webb,wetzer,? during the Fall '07 term at USC.

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Quiz 2 - 1. Which of the following is NOT an example of...

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