In a fungal cross of A B X a b (the loci are linked)in meiosis in which there has been a four-strand double crossover between the loci,the percent of meiotic products that will be recombinant for A and B for that ascus is:
A)0.
B)25.
C)50.
D)75.
E)100.

Question

Quizplus · Accepted Answer

In a four-strand double crossover, all chromatids are involved and exchange segments, resulting in 100% recombinant chromatids for the loci involved.

In a Fungal Cross of a B X a B