Do a dihybrid cross between two pea plants that are TtAa and TtAa. Tall is dominant and short is recessive an

Question

Do a dihybrid cross between two pea plants that are TtAa and TtAa. Tall is dominant and short is recessive and Axial is dominant and terminal is recessive. What is the phenotypic ratio of the offspring?

Answer 1

9 tall, axial: 3 tall, terminal : 3 short, axial : 1 short, terminal

   T_A_              T_aa                  ttA_                    ttaa

( _ means the allele can be either dominant or recessive)

Answer 2

This is a classic example of a dihybrid cross. Crosses like this will always result in the 9:3:3:1 ratio.