The outcome of a mating between individuals heterozygous at two genes determining their ABO blood ty

I‘IBHh I‘IBHh Consideration of blood types Consideration of H substance m a 1/4 type A m i m _ m _, film fcgnt'I * 2/41VP6 AB su s ance m — — M‘MB ma #:3352232“ GenoWPes PhenOtvpes Genotypes Phenotypes Of all offspring Of all offspring Final probabilities l l l 3/4 form 1/4 H substance 3,16 type A type A i 1l4 do not form 1 I16 type 0 H substance 3/4 form 2/4 H substance 6/16 type AB type AB 7 114 do not form H substance 2’16 type 0 3/4 form 1/4 H substance 3,16 type B type B i 1l4 do not form H substance 1’16 type 0 Final phenotypic ratio = 3/16 A: 6/16 AB: 3/16 B: 4/16 0