Quiz 2 WED key - BIO325 Genetics Instructor: Dr. Tracey...

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BIO325 Genetics Instructor: Dr. Tracey Ruhlman TA: Teofil Nakov QUIZ 2 Points are given in parentheses after each question. Total points = 20. 1. True or False (1 point each) a) For autosomal recessive traits, affected children always have two affected parents. False b) Bivalents appear in meiotic prophase I and II False c) Independent assortment happens at meiotic anaphase I True d) The product rule is used when combining the probability of two or more events independent of each other True e) Sex chromosomes possess pseudoautosomal regions that enable them to pair up during meiosis True 2. Consider the following cross: A/a;B/b;C/c;D/d;E/e x a/a;B/b;C/C;d/d;E/E If there is complete dominance for each of the genes (a) What proportion of the offspring will show the recessive phenotype for each gene? (2.5 points) 0. No progeny will be recessive for all loci at the same time. Loci C and D will always show dominant phenotype. ` (b) How many different types of gametes can each individual in the outlined cross
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Quiz 2 WED key - BIO325 Genetics Instructor: Dr. Tracey...

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