Practice Midterm I

Practice Midterm I - GENETICS, PCB 3063 MIDTERM I -...

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GENETICS, PCB 3063 MIDTERM I - FEBRUARY 9, 2010 DR. MIYAMOTO, FORM B NAME: _________________________________________ __ UFID: __________ Please put your answers directly on the exam itself, as there is no "computer scantron" sheet. To receive full credit, your answers must be complete AND clear, AND they must address what is being asked. Do not include peripheral or irrelevant information that could detract from your answer. The exam consists of 10 pages, starting with this cover page. You have 100 minutes for this exam. Please also remember that calculators cannot be shared. Finally, please remember that when a problem asks for phenotypes and/or genotypes, the frequencies of the phenotypes andlor genotypes must be provided as well. Good luck! Critical Values of th~ l Distribution P df 0.995 0.975 0.200 0.100 0.050 0.025 0.020 0.010 0.005 0.002 0.001 1 0.000 1.642 2.706 3.841 5.024 5.412 6.635 7.879 9.550 10.828 2 3.219 4.605 5.991 7.378 7.824 9.210 10.597 12.429 13.816 3 0.071 0.216 4.642 6.251 7.815 9.348 9.837 11.345 12.838 14.796 16.266 4 0.207 0.484 5.989 7.779 9.488 11.143 11.668 13.277 14.860 16.924 18.467 5 0.412 0.831 7.289 9.236 11.070 12.833 13.388 15.086 16.750 18.907 20.515 6 0.676 1.237 8.558 10.645 12.592 14.449 15.033 16.812 18.548 20.791 22.458 7 0.989 1.690 9.803 12.017 14.067 16.013 16.622 18.475 20.278 22.601 24.322 8 1.344 2.180 11.030 13.362 15.507 17.535 18.168 20.090 21.955 24.352 26.124 9 1.735 2.700 12.242 14.684 16.919 19.023 19.679 21.666 23.589 26.056 27.877 10 2.156 3.247 13.442 15.987 18.307 20.483 21.161 23.209 25.188 27.722 29.588 11 2.603 3.816 14.631 17.275 19.675 21.920 22.618 24.725 26.757 29.354 31.264 12 3.074 4.404 15.812 18.549 21.026 23.337 24.054 26.217 28.300 30.957 32.909 13 3.565 5.009 16.985 19.812 22.362 24.736 25.472 27.688 29.819 32.535 34.528 14 4.075 5.629 18.151 21.064 23.685 26.119 26.873 29.141 31.319 34.091 36.123 1
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Questions 1 to 8 (each worth 6 points). Multiple choice. Please circle the -==-"'-=-== answer. 1. Which one ofthe following statements about mitosis and meiosis is false? A. Crossing over occurs during prophase I of meiosis. B. In the absence of crossover, Mendel's first law (Law ofSegregation) occurs during anaphase I ofmeiosis. C. Homologous chromosomes undergo synapsis during prophase ofmitosis. D. Cell division cycle (CDC) genes regulate the rate at which cells proceed through the cell cycle. E. Choose E if none ofthe above is false. 2. ofthe following statements about genetics and the environment is false? A. The reaction norm refers to a graph that summarizes the phenotypic response among individuals with the same genotype to a changing environmental variable. B. Expressivity is defined as the proportion or percentage ofindividuals with a given genotype who express the associated trait. C. Narrow-sense heritability (h 2 ) quantifies the degree to which the total phenotypic variance for a trait (V p) is attributable to the additive genetic variance (V A) rather than to the environmental variance (V E)' In certain reptiles, sex is determined by the environmental temperature rather than by the genotypes ofthe developing embryos.
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Practice Midterm I - GENETICS, PCB 3063 MIDTERM I -...

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