Download Blood Type Practice

Name:
_______________________Date:________________
Blood Type Practice Problems
Part 1: Use your notes to complete the following.
1. What are the three alleles for human blood type? Explain which are dominant, recessive, or
codominant?
2. What are the two possible genotypes for Blood Type A?
3. What are the two possible genotypes for Blood Type B?
4. What is the ONLY genotype for Blood Type O?
5. What blood type results from the Ia allele crossing with the Ib allele?
Part 2: Practicing blood type problems
6. Fill in the following punnett square to determine the offspring’s possible blood type.
a. Mother has AB Blood Type
b. Father has O Blood type
Mother’s Genotype = ___________
Father’s Genotype = ___________
What are the possible phenotypes of the offspring?
What are the chances that their child will have type A blood?
What are the chances that their child will have type B blood?
What are the chances the offspring will have type O blood?
7. Could a man with type B blood and a woman with type AB produce a child with type O blood? Why or
why not?
8. Alladin is being accused of being the father of Jasmine’s child. Alladin has homozygous Type A blood
and Jasmine has heterozygous Type B blood. The child is Type O. Can Alladin be the father of this
child? Draw and complete a punnett square and prove it!
9. A man with Type A blood marries a woman with Type B blood. Their child has type O blood. What are
the genotypes of the parents?
Mother : _____________________________ Father: ____________________________
What other genotypes could their children have?
10. Two newborn babies were accidentally mixed up in the hospital. In an effort to correct the mistake,
blood types of the babies and parents were determined. Here are the results of the blood types. Which
baby belongs to which set of parents? Use the punnett squares below to determine which baby
belongs to which family.
Baby 1 = Type O
Baby 2 = Type B
Mrs. White = Type B
Mr. White = Type AB
Mrs. Jones = Type B
Mr. Jones = Type B
Baby 1 belongs to the ______________family Baby 2 belong to the ___________________family