KeyAnswers.Blackboard - PrelimII

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Prelim II BioG 1109 ~ answers are organized by topic and actual question [not question number]. Correct answers are in blue type. Chapter 18 1. Based on your Introductory Chapter Essay reading, which of the following traits help(s) classify a duck-billed platypus as a mammal? Mammary glands 2. Which of the following is NOT one of the definitive characteristics of early tetrapods and modern amphibians? They have amniote eggs 3. Which of the following is unique to chordates? A notochord 4. You find a small, elongated animal embedded in sand with one end sticking out. It has segmented musculature, a coelom, a notochord, and a complete digestive tract with an anus located partway down the body. This animal is most likely… a chordate. 5. Lampreys differ from other fishes in which of the following ways? They lack both jaws and paired fins 6. Which of the following statements is FALSE ? Amphibians are an example of an amniote. 7. Which of the following is not a homology between birds and other reptiles? Endothermy [will also accept ‘All of the above are actually homologies shared with reptiles’ 8. You discover a tetrapod with the following characteristics ~ females produce shelled eggs following internal fertilization; and the integument (skin) is adapted to help reduce water loss. Based on these observed characteristics you may properly conclude that … The organism could belong to Reptilia or Mammalia, but NOT Amphibia. 9. Which of the following statements is true? Raccoons and skunks belong to Carnivora Chapter 8 10. Based on your Introductory Chapter Essay reading, the creation of offspring carrying genetic information from just a single parent is called… Asexual reproduction 11. Which of the following is false? Prokaryotic chromosomes are more complex than those of eukaryotes. 12. What occurs during Mitotic Metaphase? Chromosomes line up along the equator of the dividing cell 1
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13. Which of the following is a difference A. In meiosis four daughter cells are produced, whereas in mitosis two daughter cells are produced. B. In diploid organisms, cells produced by mitosis are diploid; while cells produced by meiosis are haploid. C. Genetic diversity introduced by crossing over occurs during meiosis, but not mitosis. D. Genetic diversity introduced by independent assortment occurs during meiosis, but not mitosis.
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This note was uploaded on 11/24/2008 for the course AEM 2400 taught by Professor Mclaughlin,e. during the Fall '07 term at Cornell University (Engineering School).

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KeyAnswers.Blackboard - PrelimII

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