When two genes are located on two different chromosomes in yeast, a two-factor cross is expected to generate PD tetrads and NPD tetrads in a ratio of Blank______.Multiple choice question.3:11:21:1
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Listed below are 7 two-factor interaction ratios observed in progeny from various dihybrid parents. Suppose that in each of these cases one of the dihybrid parents is testcrossed (instead of being mated to another dihybrid individual). What phenotypic ratio is expected in the progeny of each testcrosses? (1) 9:6:1; (2) 9:3:4; (3) 9:7; (4) 12:3:1; (5) 9:3:3:1; (6) 13:3.
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What is the expected offspring phenotype ratio for a dihybrid cross (AaBb x AaBb) if each of the two genes are unlinked and each of the two traits is co-dominant? Select one or more: a. 1:2:2:1:4:1:2:2:1 b. 9:3:3:1 c. 1:4:1:4:1:4:1 d. 1:2:4:2:4:2:1 e. 9:3:4
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