Incomplete dominance in dihybrid crosses Two genes with partial dominance: F2=1: 2: 1: 2: 4: 2: 1: 2: 1 14B/B AA B/B 1/16 1/4AA 12B/b AaB/b 2/16 14b/b AA b/b 1/16 14B/B Ala b/B =2/16 1/2Aa 1/2B/b Aa b/b =4/16 114b/b Aa b/b =2/16 14B/B ∥aB/B =1/16 14a/a 12B/b ala b/b =2/16 14b/b a/a blb =1/16Incomplete dominance in dihybrid crosses • Two genes with partial dominance: F2 = 1:2:1:2:4:2:1:2:1 1/4 B/B A/A B/B = 1/16 1/4 A/A 1/2 B/b A/A B/b = 2/16 1/4 b/b A/A b/b = 1/16 1/4 B/B A/a B/B = 2/16 1/2 A/a 1/2 B/b A/a B/b = 4/16 1/4 b/b A/a b/b = 2/16 1/4 B/B a/a B/B = 1/16 1/4 a/a 1/2 B/b a/a B/b = 2/16 1/4 b/b a/a b/b = 1/16