BIOL 121 (2011) Fall Exam 3 + Key

C resistance to apoptosis d recruitment of blood andor

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Unformatted text preview: NAME: Exam 3 12/5/2011 8) A gene controls wing spot color in butterflies such that + = blue and - = red. In an isolated population there are 36 blue- spotted butterflies and 64 red- spotted butterflies. Assuming + is dominant to – and they are in Hardy- Weinberg equilibrium, what is the frequency of the - allele in this population? A. 0.1296 B. 0.36 C. 0.6 D. 0.64 E. 0.75 F. 0.8 (4 pts) 9) Most warblers produce three eggs per year. Those producing either fewer or more than three eggs per year have fewer offspring that reach reproductive age and mate themselves. Which of the following terms best describes this? A. disruptive selection B. artificial selection C. stabilizing selection D. sexual selection E. directional selection (4 pts) 10) Cancer arises due to the gradual loss of multiple homeostatic controls such as: A. Loss of growth factor dependence. B. Loss of responses to anti- growth signals and differentiated state. C. Resistance to apoptosis. D. Recruitment of blood and/or lymph. E. All of the above (3 pts) 11) The fact that all seven of the pea plant traits studied by Mendel obeyed the principle of independent assortment most probably indicates which of the following? A. All of the genes controlling the traits were located on the same chromosome. B. All of the genes controlling the traits behaved as if they were on different chromosomes. C. The diploid number of chromosomes in the pea plants was 7. D. N...
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