## Can you be negative if both parents are positive?

Each person has two Rh factors in their genetics, one from each parent. The only way for someone to have a negative blood type is for both parents to have at least one negative factor. For example, if someone’s Rh factors are both positive, it is not possible for his or her child to have a negative blood type.

## Can a parent have a negative blood type?

If one parent has A and another has AB, they can either produce a child with A, B or AB blood types. If one parent has A and another has O, they can either produce a child with A or O blood types. Rh Positive (Rh+) and Negative (Rh-) Blood Types

What happens if mom and Dad have O Negative blood?

In this case, the most likely explanation is that dad is a carrier for being Rh- and mom is a carrier for blood type O. What happened was that dad and mom each passed both an O and an Rh negative to the baby. The end result is an O negative child. Each of their kids has around a 1 in 8 chance of having O negative blood.

### Can a father’s blood type be an O positive?

BTW, if your father’s or mother’s blood type was performed in the army, just because it says “A Positive” on his dog tags or “O positive” on hers, that is not necessarily the truth. For many years, the military would do blood typing with large glass plates.

### When is a mother and father not both positive for Rh factor?

When a mother-to-be and father-to-be are not both positive or negative for Rh factor, it’s called Rh incompatibility.

If one parent has A and another has AB, they can either produce a child with A, B or AB blood types. If one parent has A and another has O, they can either produce a child with A or O blood types. Rh Positive (Rh+) and Negative (Rh-) Blood Types

In this case, the most likely explanation is that dad is a carrier for being Rh- and mom is a carrier for blood type O. What happened was that dad and mom each passed both an O and an Rh negative to the baby. The end result is an O negative child. Each of their kids has around a 1 in 8 chance of having O negative blood.

BTW, if your father’s or mother’s blood type was performed in the army, just because it says “A Positive” on his dog tags or “O positive” on hers, that is not necessarily the truth. For many years, the military would do blood typing with large glass plates.

When a mother-to-be and father-to-be are not both positive or negative for Rh factor, it’s called Rh incompatibility.