Punnett square worksheet
Complete the following monohybrid crosses: draw a Punnett square, list the ratio and describe the
offspring. Be sure to remember that the capital letter is dominant.
Example) A green pea plant (GG) is being crossed with a green pea plant (Gg).
G G
GenoType= 2 GG: 2 Gg ; 0 gg
G
g Phenotype= 4 Green pea plants: 0 other color
1) A green pea plant (Gg) is crossed with a yellow pea plant (gg).
2) A tall plant (TT) is crossed with a tall plant (Tt).
3) A tall plant (Tt) is crossed with a short plant (tt).
4) A red flower (Rr) is crossed with a white flower (rr).
5) A white flower (rr) is crossed with a white flower (rr).
6) A black chicken (BB) is crossed with a black chicken (BB).
GG
GG
Gg
Gg
