Question

A plant can have green (G) or yellow (g) leaves. It can also have a long (K) or short (k) stem. A scientist is preparing a Punnett square for a dihybrid cross of a plant with a genotype ggKk. What possible gametes can the plant produce?

A. gk, gK
B. GK, Gk
C. gg, Kk
D. GK, Gk, gk, gK

Answer 1

Answer: A. gk, gK

The scientist doing a dihybrid crossing using plants with a genotype ggKk. To make the Punnet square, you need to understand how the gamete divided. The square should be
     K    k
g  gK   gk
g  gK   gk

The possible gamete for gg-Kk would be 
1. gK
2. gk