genetics Test 2 - PRINTABLE VERSION Test 2 (11843) You...

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Unformatted text preview: PRINTABLE VERSION Test 2 (11843) You scored 35 out of 100 Question 1 Your answer is INCORRECT. A reciprocal translocation was discovered in a wild species of maize. The standard gene order was: N1: a * b c d e f and N2: s * t u v (* is the centromere). The translocated chromosomes have gene order: T1: a * b c u v and T2: s * t d e f. Which chromatids, attached to their respective centromeres, must separate from each other during the first meiotic division to from viable meiotic products? a) N1 with T1 and N2 with T2 provided there's recombination b) N1 with T1 and N2 with T2 c) N1 with T2 and N2 with T1 d) N1 with N2 and T1 with T2 e) none of the above Question 2 Your answer is INCORRECT. The flowers of larkspur ( Delphinium ) may be either purple, blue or white. From a garden population of unknown genotypes you make the following Page 1 of 12 Print Test 5/5/2010 https://www.casa.uh.edu/CourseWare/Root/UsersStudents/PrintTest.htm crosses and obtain the kinds of progeny shown below: Which of the following best represents the genotype of the father in Cross 1? a) AABB b) AABb c) AaBb d) Aabb e) aabb Question 3 Your answer is CORRECT. In a human population the genotype frequencies at on locus are f(aa) = 0.51, f(Aa) = 0.43, and f(AA) = 0.06. The frequency of the A allele is a) 0.285 b) 0.245 c) 0.490 Page 2 of 12 Print Test 5/5/2010 https://www.casa.uh.edu/CourseWare/Root/UsersStudents/PrintTest.htm d) 0.735 e) 0.940 Question 4 Your answer is INCORRECT. Bacterial transposon structure can be thought of as: a) IS sequences flanked by inverted resistance genes b) drug resistance gene(s) flanked by IS elements c) drug resistance genes flanked by a pair of mu phage d) resistance gene(s) flanked by inverted resistance transfer factors (RTFs) e) none of the above Question 5 Your answer is INCORRECT. There are six main species in the Brassica genus: B. carinata, B. campestris, B. nigra, B. oleracea, B. juncea , and B. napus . You can deduce the interrelationships among these six species from the following table: Page 3 of 12 Print Test 5/5/2010 https://www.casa.uh.edu/CourseWare/Root/UsersStudents/PrintTest.htm What is the chromosome number of B. nigra ? a) sixteen b) eighteen c) twenty d) twenty-seven e) thirty-five Question 6 Your answer is CORRECT....
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genetics Test 2 - PRINTABLE VERSION Test 2 (11843) You...

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