Alleles FOR A AND B blood cells are condominant the condition with no antigens are present in the blood sells type O blood is a recessive trait, what are the possible sets of parents that can most likely produce a child WITH type O blood

Answer 1

For a child to have type O blood (genotype OO), they must inherit one O allele from each parent. Given that A and B alleles are codominant and O is recessive, the possible parental genotypes that can produce a child with type O blood include:

1. Type O (OO) x Type O (OO): Both parents are type O, so they can only pass on O alleles.
2. Type A (AO) x Type O (OO): The type A parent can pass either an A allele or an O allele, while the type O parent can only pass on an O allele. The child can inherit OO to be type O.
3. Type A (AA) x Type O (OO): The type A parent can pass only A alleles, so this combination cannot produce a type O child.
4. Type B (BO) x Type O (OO): Similar to the type A case, the type B parent can pass either a B allele or an O allele. The child can inherit OO for type O blood.
5. Type B (BB) x Type O (OO): In this case, the type B parent can only pass B alleles, so this combination cannot produce a type O child.
6. Type A (AO) x Type B (BO): Each parent can contribute either an A, B, or O allele. The child can inherit OO (from both parents) to have type O blood.

Thus, the possible sets of parental genotypes that can produce a type O child are:

• OO x OO
• AO x OO
• BO x OO
• AO x BO

These combinations can yield at least one child with type O blood (OO genotype).