Punnett Square Quiz
Name:_________________________
Period:_____ Date:______________
Read each question carefully and select the best answer. Good luck!
1. Which of the following terms describes the physical appearance of a trait?
A. Recessive
B. Dominant
C. Phenotype
D. Genotype
2. Which of the following describes the different variations of a gene?
A. Genes
B. Alleles
C. Homozygous
D. Heterozygous
3. Which of the following is a homozygous genotype?
A. Blue eyes
B. Ff
C. Brown fur
D. hh
4. What does a Punnett Square help you figure out?
A.
B.
C.
D.
How many children someone will have.
The probability that a child of two parents will have a specific trait.
If two parents have 4 children, it tells you which trait each child will have.
How to make sure the children of two parents have a certain trait.
5. Who is the father of genetics?
A. Gregor Mendel
B. King Gregory
6. Complete the Punnett Square and
circle a heterozygous genotype.
C. Gene Simmons
D. Louis Pasteur
7. Complete the Punnett Square and circle
a homozygous recessive genotype.
8. In dogs, short hair (H) is dominant to long hair (h). Complete the Punnett square to show the combinations a
heterozygous mom and a heterozygous dad create.
Genotypes:
________
Percentage:___________
________
___________
________
___________
Phenotypes: ________
Percentage: ___________
________
___________
9. Unicorns can have one of two horn lengths. Long horns (R) are dominant to short horns (r). Glitter Rainbow
Sparkles wants to know the trait that her baby unicorn could inherit if she has a child with her husband, Ted.
Glitter Rainbow Sparkles has a short horn, but her husband Ted is heterozygous for a long horn. Complete the
Punnett Square to help Glitter Rainbow Sparkles and Ted figure out what their baby unicorn could look like!
10. Sharks inherit hunting preference from their genes. Hunting alone (A) is dominant to hunting in small groups
(a). Complete the Punnett Square to show the combinations a homozygous dominant mom and a homozygous
recessive dad could create.