bio7_ch15 - Biology 7e(Campbell Chapter 15 The Chromosomal...

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1 Biology, 7e (Campbell) Chapter 15: The Chromosomal Basis of Inheritance Chapter Questions 1) Chromosomes and genes share all of the following characteristics except that A) they are both present in pairs in all diploid cells. B) they both undergo segregation during meiosis. C) their copy numbers in the cell decrease after meiosis, and increase during fertilization. D) they are both copied during the S phase of the cell cycle. E) they both pair up with their homologues during prophase of mitosis. Answer: E Topic: Concept 15.1 Skill: Knowledge 2) The improvement of microscopy techniques in the late 1800s set the stage for the emergence of modern genetics because Topic: Concept 15.1 Skill: Comprehension 3) When Thomas Hunt Morgan crossed his red-eyed F 1 generation flies to each other, the F 2 generation included both red- and white-eyed flies. Remarkably, all the white-eyed flies were male. What was the explanation for this result? A) The involved gene was on the X chromosome. B) The involved gene was on the Y chromosome. C) The involved gene was on an autosome. D) Other male-specific factors influence eye color in flies. E) Other female-specific factors influence eye color in flies. Answer: A Topic: Concept 15.1 Skill: Knowledge 4) Which of the following statements is (are) true? Topic: Concept 15.2 Skill: Knowledge
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2 5) How would one explain a testcross involving F 1 dihybrid flies in which more parental-type offspring than recombinant-type offspring are produced? Topic: Concept 15.2 Skill: Comprehension
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