Name: ______________________
Genotype Practice Worksheet
Directions: U
​ se the information given to you below for each trait to answer the problems that follow.
Trait
Hair Color
Eye Color
Dimples
Widow’s Peak
Freckles
Handedness
Dominant Form
Brown
Brown
Dimples
Widow’s Peak
Freckles
Right Handed
Recessive Form
Blond
Blue
No Dimples
Not Present
No Freckles
Left Handed
Letter to Use
B or b
E or e
D or d
W or w
F or f
H or h
1. What is the genotype of a female who is heterozygous for eye color? _______________________
2. What is the genotype of someone who is homozygous dominant for dimples? ___________________
3. What is the genotype of someone who is homozygous recessive for hair color? __________________
4. What is the genotype of someone who is heterozygous for the widow’s peak? _________________
5. What is the genotype of someone who is homozygous recessive for eye color? __________________
6. What is the genotype of someone who is heterozygous for dimples? __________________________
7. What is the genotype of someone who is homozygous dominant for handedness? ________________
8. What is the genotype of someone who is homozygous recessive for handedness? _________________
9. What is the genotype of someone who is heterozygous for freckles? __________________________
10. What is the genotype of someone who is homozygous dominant for hair color? ________________
11. If a person has the genotype DD, they are considered to be? (circle one)
homozygous dominant
heterozygous
homozygous recessive
12. If a person has the genotype hh, they are considered to be? (circle one)
homozygous dominant
heterozygous
homozygous recessive
13. If a person has the genotype Ww, they are considered to be? (circle one)
homozygous dominant
heterozygous
homozygous recessive
14. If a person has the genotype Bb, what trait are they heterozygous for? ________________________
15. If a person has the genotype FF, what trait are they homozygous for?
_______________________________