AN1_Quiz3_Answers - ANTHROPOLOGY 1-Quiz 3 - acceptable...

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ANTHROPOLOGY 1—Quiz 3 — acceptable answers 1. Mitochondrial DNA … a. is found in both males and females. b. is not passed on by fathers to their offspring. c. has been used to trace modern human ancestry to a single ancient African woman. d. does not recombine sexually. e. All of the above are true. 2. What are two important criteria used for defining and constructing a cladogram? Shared derived traits (homologous and similar) - vs - derived divergent traits (homologous but differently modified) Cladistic logic: a. Identify traits likely to be homologous in different species. [“shared derived traits”] b. Treat the species with the least number of shared derived traits with any other species being compared as the “outgroup” c. Treat traits shared in common in the others as likely to be inherited from a common ancestor. d. Treat traits that appear together in each of many different species as more reliable indicators of shared common ancestry than any individual shared trait. Which of these criteria is used to predict that two species have a last common ancestor? c. shared derived traits In genetic cladograms what additional information besides numbers of gene differences is necessary to estimate a date for a last common ancestor? Independent fossil-geological evidence of absolute dating of a time before and after
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This note was uploaded on 02/07/2012 for the course ANTHRO 1 taught by Professor Wilkie during the Spring '08 term at University of California, Berkeley.

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AN1_Quiz3_Answers - ANTHROPOLOGY 1-Quiz 3 - acceptable...

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