4. Genetic Mapping and Linkage
Mapping Genes
4:32 minutes
Problem 9b
Textbook Question
Textbook QuestionGenes A, B, C, D, and E are linked on a chromosome and occur in the order given.
Previous genetic linkage crosses have determined that recombination frequencies are 6% for genes A and B, 4% for genes B and C, 10% for genes C and D, and 11% for genes D and E. The sum of these frequencies between genes A and E is 31%. Why does the recombination distance between these genes as determined by adding the intervals between adjacent linked genes differ from the distance determined by the test cross?
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