1. Punnett Square Practice
Work the Punnett Square to solve the problem.
Choose the best answer and click submit.
Begin

2. Shirley is homozygous for blue eyes
Shirley is homozygous for blue eyes. Clyde is heterozygous for brown eyes which is a dominant trait. Work a Punnett square to answer the following questions.
Which of the following shows all possible genotypes for their children?
A. All BB
B. All Bb
C. All bb
D. BB and Bb

3. Shirley is homozygous for blue eyes
Shirley is homozygous for blue eyes. Clyde is heterozygous for brown eyes which is a dominant trait. Work a Punnett square to answer the following questions.
Which of the following shows all of the possible phenotypes?
Blue eyes
Brown eyes
BB or Bb bb
What is the probability of Shirley and Clyde having a child with the dominant trait? 0%
25%
50%
75%
100%

4. Mandy has a round face, and Stan has a square face
Mandy has a round face, and Stan has a square face. Mandy’s father had a square face. A round face is the dominant trait. Work a Punnett square to determine the possible genotypes and phenotypes of their children, and use these to answer the following questions.
Which of the following show the possible genotypes for Mandy and Stan’s children?
RR or rr
Rr or rr
rr only
RR only
Which of the following phenotypes could their children have? RR
Round
Round or square rr

5. For the previous question, what are the chances that Mandy and Stan could have a child
with a homozygous genotype? 0%
25%
50%
75%
100%

6. Stacy has a widow’s peak, and Tony does not
Stacy has a widow’s peak, and Tony does not. Widow’s peak is a dominant trait.
For as long as Stacy can remember all of the relatives in her family including both of
her parents had widow’s peaks. Work a Punnett square to determine possible
Genotypes and phenotypes for their children.
Which of the following shows possible genotypes for their children?
50% WW, 50% ww
100% WW
100% Ww
50% Ww, 50% ww
What is the probability of getting a child with a heterozygous genotype?
What phenotype will their children have?