1. p. 320 Analyzing Data 1, 2, 3, 4

2. p. 320 Analyzing Data 1, 2, 3, 4
1. Which blood type makes up the greatest percentage of the U.S. population?
1. Type O+ makes up the greatest percentage of the U.S. population.
2. What percentage of the total U.S. population has a positive Rh factor? What percentage has a negative Rh factor?
2. 85% of the population has a positive Rh factor and 15% of the population has a negative Rh factor.

3. p. 320 Analyzing Data 1, 2, 3, 4
3. Which blood type can be used for transfusion into the largest percentage of individuals? Which type has the smallest percentage of possible donors available?
3. O- can be used for 100% of individuals but AB+ can only be used for 4%.
4. Could a person with O+ blood have two parents with O- blood? Could that person have a daughter with AB+ blood? Explain your answers.
4. No, a person with O+ blood could not have two parents with O- blood because
both parents would be homozygous recessive for the Rh factor. They do not have any Rh+ alleles to pass on. This person could not have an AB+ daughter because a person with O+ blood only has O alleles to pass on.