In Mendel's experiments, the dihybrid phenotypic ratio was
1
9 (Round, Green) : 3 (Round, Yellow) : 3 (Wrinkled, Yellow): 1 (Wrinkled, Green).
2
9 (Round, Yellow) : 3 (Round, Green) : 3 (Wrinkled, Yellow): 1 (Wrinkled, Green).
3
9 (Wrinkled, Yellow) : 3 (Round, Green) : 3 (Round, Yellow) : 1 (Wrinkled, Green).
4
9 (Wrinkled, Green) : 3 (Round, Yellow): 3 (Wrinkled, Yellow): 1 (Round, Green).