Two haploid 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? Look for a 1:3 or 3:1 ratio             A)   abc,   aBc,   AbC,   aBC   a/A is 3 recessive 1dominant, B/b is 2:2, same for C             B)   abc,   abc,   ABC,   ABC 2:2 for all             C)   aBc,   aBc,   AbC,   AbC 2:2 for all             D)   abC,   abc,   ABc,   ABC this one has equal  ratio of dominant/recessive 2 dominant C’s, 2 Recessive c, same form A and a and B and b.             E)   Abc,   Abc,   aBC,   aBC

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Two haploid 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? Look for a 1:3 or 3:1 ratio

            A)   abc,   aBc,   AbC,   aBC   a/A is 3 recessive 1dominant, B/b is 2:2, same for C
            B)   abc,   abc,   ABC,   ABC 2:2 for all
            C)   aBc,   aBc,   AbC,   AbC 2:2 for all
            D)   abC,   abc,   ABc,   ABC this one has equal  ratio of dominant/recessive 2 dominant C’s, 2 Recessive c, same form A and a and B and b.
            E)   Abc,   Abc,   aBC,   aBC

 

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