The following progeny phenotypes result from a cross of an AB/ab individual (AB

Question

The following progeny phenotypes result from a cross of an AB/ab individual (AB on one chromosome and ab on the homologous chromosome) with an ab/ab individual       a b   400   A b   50   a B 50   A B 400                      what is the recombination rate between A and B?                                                                                                      a.0.06                                                                                                                                                                                b. 0.11

c. 0.22

d. 0.25                  e. 0.05

Explanation / Answer

b. 0.11

Since the progeny with recombined alleles are both 50 in number (Ab and aB). The recombination frequency would be (50+50)/ Total number of progeny = 100/900 = 0.11.

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