Question: Can you tell paternity by blood type?

Although blood group studies cannot be used to prove paternity, they can provide unequivocal evidence that a male is not the father of a particular child. Since the red cell antigens are inherited as dominant traits, a child cannot have a blood group antigen that is not present in one or both parents.

Does the fathers blood type determine the childs blood type?

ABO Blood Type Just like eye or hair color, our blood type is inherited from our parents. Each biological parent donates one of two ABO genes to their child. The A and B genes are dominant and the O gene is recessive. For example, if an O gene is paired with an A gene, the blood type will be A.

Can a son have a different blood type than his father?

While a child could have the same blood type as one of his/her parents, it doesnt always happen that way. For example, parents with AB and O blood types can either have children with blood type A or blood type B. These two types are definitely different than parents blood types! They will match both parents.

Can you tell blood type from DNA?

The most precise blood typing you can get is with DNA. To be fair, that massive oversimplification for blood transfusions has worked pretty well for the past half century---except when it hasnt.

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