Single Answer MCQ
Q-00019407

If a person has blood type O, what are the possible genotypes of their parents?

1

AO and AO

2

BO and BO

3

AB and AO

4

A and B

Answer and Solution

Answer

A. AO and AO

Solution:

A person with blood type O has the genotype OO. Therefore, their parents must provide O alleles, meaning they could be AO or BO (heterozygous) or OO (homozygous) but not AB.

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