Two strains of S.cerevisae (yeast)are crossed.One has the genotype ABC and the other abc.Five sets of the resultant tetrads are noted below.In which set did a gene conversion event occur?
A)abc, aBc, AbC, aBC
B)abc, abc, ABC, ABC
C)aBc, aBc, AbC, AbC
D)abC, abc, ABc, ABC
E)Abc, Abc, aBC, aBC

Question

Quizplus · Accepted Answer

Gene conversion is indicated by non-Mendelian segregation of alleles, such as 3:1 or 1:3 ratios. In set A, the presence of aBc and aBC suggests a gene conversion event, deviating from the expected 2:2 segregation pattern.

Two Strains of S