Extra Punnett Square Practice with Plant Height
Trait = plant height
T = tall (dominant)
t = short (recessive)
For each cross, please show:
% Tall = ___________
% Short = ___________
% TT = ___________
% Tt = ___________
% tt = ___________
1. Homozygous dominant (TT) x
homozygous recessive (tt)
Parent 1 genotype
% Tall = ___________
% Short = ___________
% TT = ___________
% Tt = ___________
% tt = ___________
Parent 2
genotyp
e
2. Heterozygous (Tt) x Heterozygous (Tt)
Parent 1 genotype
Parent 2
genotyp
e
% Tall = ___________
% Short = ___________
% TT = ___________
% Tt = ___________
% tt = ___________
3. Homozygous recessive (tt) x
Heterozygous (Tt)
Parent 1 genotype
% Tall = ___________
% Short = ___________
% TT = ___________
% Tt = ___________
% tt = ___________
Parent 2
genotyp
e
4. Homozygous dominant (TT) x
Heterozygous (Tt)
Parent 1 genotype
% Tall = ___________
% Short = ___________
% TT = ___________
% Tt = ___________
% tt = ___________
Parent 2
genotyp
e
5. Homozygous dominant (TT) x
Homozygous dominant (TT)
Parent 1 genotype
Parent 2
genotyp
e
% Tall = ___________
% Short = ___________
% TT = ___________
% Tt = ___________
% tt = ___________
6. Homozygous recessive (tt) x
Homozygous recessive (tt)
Parent 1 genotype
% Tall = ___________
% Short = ___________
% TT = ___________
% Tt = ___________
% tt = ___________
Parent 2
genotyp
e
EYE COLOR: Brown eyes (B) are
dominant over blue eyes (b).
7. Heterozygous (___) x Homozygous
recessive (___)
Parent 1 genotype
% ___ = ___________
% ___ = ___________
% ___ = ___________
% ___ = ___________
% ___ = ___________
Parent 2
genotyp
e
8. Heterozygous (___) x Homozygous
dominant (___)
Parent 1 genotype
Parent 2
genotyp
e
% ___ = ___________
% ___ = ___________
% ___ = ___________
% ___ = ___________
% ___ = ___________