Name:
Date:_________ Block: _________
Punnet Square WebQuest
Go to the following website to practice Punnet squares.
http://biology.clc.uc.edu/courses/bio105/geneprob.htm
As you find the correct answers, list them on the page below. Good luck!
1. Monohybrid Cross:
a. What is the woman’s genotype? _________
b. Fill in the squares below:
If they have children:
c. What percent of the children will have heterozygous brown eyes? _________%
2. Testcross:
a. To see if the male dog is deaf, you can breed him with a deaf female. What is the
genotype of a deaf female? ___________
b. Fill in the Punnet squares below:
If he is Dd:
c. What percent of the offspring can hear? ______ %
d. For 100% of the offspring to hear, the male must be what genotype? ________
3. Incomplete Dominance:
a. A person who has sickle cell anemia is immune to what disease? ____________
b. A man and woman living in a tropical area where malaria is prevalent and health care
is not accessible have seven children. The genotypes of these children are ss, Ss,
SS, ss, Ss, Ss, and SS. The genotype of both parents has to be __________.
c. The children expected to live to adulthood and reproduce have what genotype?
________
4. Dihybrid Cross:
a. R represents ______________________
b. r represents _______________________
c. T represents the ability to taste __________
d. t represents ___________________________
e. Fill in the Punnet squares below from the website.
If they have children:
f. What fraction of the children will be homozygous tongue-rollers who are PTC
tasters? _____________