Inheritance of Blood Types
Explore the genetics of human blood types, including ABO and Rh systems, and solve Punnett square problems.
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Inheritance of Blood Types
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Read each question carefully and answer to the best of your knowledge. Show your work for Punnett square problems.
1. Which of the following describes the inheritance pattern for human ABO blood types?
Complete dominance
Incomplete dominance
Codominance and multiple alleles
Sex-linked inheritance
2. A person with type O blood has which of the following genotypes?
I^A i
I^B I^B
i i
I^A I^B
3. The universal donor blood type is , while the universal recipient blood type is .
4. The Rh factor is determined by a single gene with two alleles, where Rh-positive is over Rh-negative.
5. A mother has type A blood (heterozygous) and the father has type B blood (heterozygous).
a) Draw a Punnett square to determine the possible genotypes and phenotypes of their children.
b) What is the probability of them having a child with type AB blood?
c) What is the probability of them having a child with type O blood?
6. A person with genotype I^A I^A can have a child with type O blood if their partner has genotype i i.
True
False
7. Erythroblastosis fetalis (hemolytic disease of the newborn) can occur when an Rh-negative mother carries an Rh-positive fetus.
True
False
8. Explain why a person with type AB blood is considered the 'universal recipient'.
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