Ex1_2006 - BioG 101 Cornell University Sept. 21, 2006 EXAM...

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BioG 101 Sept. 21, 2006 Cornell University C. D. Hopkins 1 EXAM 1 (2006) MULTIPLE CHOICE. Choose the one best answer from among those given. Mark the answer on the op-scan sheet provided. Keep a record of each of your answers on these pages so that you can correct your test using the answer key provided on the course website. Exam tip : There is no penalty for guessing. Your score is determined by the number of correct answers. 1. (2 pts) In a hypothetical species, individuals no longer of capable of reproducing are eliminated from the population if they are over 25 kilograms. Based on your knowledge of natural selection, you would predict that the average weight of the breeding population will: A) remain unchanged. B) gradually increase. C) rapidly decline. D) gradually decline. E) rapidly increase. 2. (1 pt) Why did Darwin devote an entire chapter of The Origin of Species to the topic of "Variation under Domestication”? A) He wanted to demonstrate that domestication allows animals and plants to grow larger when they are given adequate space, water, and food. B) He wanted to determine the rate of evolutionary change by measuring rates of change in domesticated species. C) He wanted to show how much a species could change over a short period of time under the influence of selective breeding. D) He wanted to show that domestication allows organisms to acquire new characteristics which they pass on to their offspring. E) He wanted to make his arguments appealing to farmers and breeders. 3. (1 pt) One consequence of Darwin's evolution by means of natural selection is that: A) organisms tend to become bigger and stronger. B) organisms tend to produce more offspring over evolutionary time. C) organisms tend to become increasingly complex. D) organisms of a given species tend to be more varied over time. E) organisms tend to become adapted to their environment. 4. (1 pt) Which of these provides evidence of the common ancestry of all life? A) the ubiquitous use of catalysts by living systems B) the structure of the nucleus C) the universality of the genetic code D) the structure of chloroplasts E) the ubiquitous use of phospholipids in membranes
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BioG 101 Sept. 21, 2006 Cornell University C. D. Hopkins 2 5. (1 pt) DNA sequences have recently been used to generate a hypothesis for the evolutionary relationships among Darwin's Finches. Which of the following traits tend to be shared within clades in the resulting phylogenetic tree, but differ between clades? A) The specific islands on which the birds are found. B) Ability to fly. C) Coloration and ability to learn songs. D) Feeding ecology, habitat preference, and bill morphology. E) The distance between the mainland of South America and the island on which they are found. 6. (1 pt) Which of the following statements about the Miller and Urey experiments on the origin
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Ex1_2006 - BioG 101 Cornell University Sept. 21, 2006 EXAM...

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