Alleles for the A and B blood cell antigens are codominant. The condition where no antigens are present on the blood cells (type O blood) is a recessive trait. Which set of parents can most likely produce a child with type O blood? (SC.912.L.16.1)
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1 point
a. one parent with type AB blood, and the other parent with type A blood
b. one parent with type AB blood and the other parent with type O blood
c. one parent with heterozygous type A blood, and the other parent with type O blood
d. one parent with homozygous type A blood, and the other parent with homozygous type B blood