Solutions For An Introduction to Genetic Analysis Chapter 6 Problem 62P

It should be noted that the F₂ generations are in the ratio of 9:6:1 showing that the dihybrid cross with both A/-; b/b and a/a; B/- having the same appearance. The disc phenotype and long phenotype are represented through A/-; B/- and a/a; b/b respectively.

A/A; B/B (disc) X a/a; b/b (long)

F ₁ :

A/a; B/b (disc)

F ₂ :

9 A/-; B/- (disc)

3 a/a; B/- (sphere)

3 A/-; b/b (sphere)

1 a/a; b/b (long)