Assume that a cross is made between AaBb and aabb plants and that the offspring occur in the following numbers: 106 AaBb,48 Aabb,52 aaBb,94 aabb.These results are consistent with which of the following? A)sex-linked inheritance with 30% crossing over B)independent assortment C)linkage with approximately 33 map units between the two gene loci D)100% recombination E)linkage with 50% crossing over

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Quizplus · Accepted Answer

The results suggest linkage with approximately 33 map units between the two gene loci because the parental phenotypes (AaBb and aabb) are more common than the recombinant phenotypes (Aabb and aaBb), indicating that the genes are linked but recombination has occurred, with the recombinant phenotypes (100 total) making up about 33% of the offspring (300 total), suggesting a recombination frequency of approximately 33%.

Assume That a Cross Is Made Between AaBb and Aabb