Humans have 35 major groups or families of these antigens, as well as other minor groups, but consideration of two, the ABO group and the RhD group, is very important to ensure that a transfusion recipient receives compatible blood. The presence of antigens within these groups is what determines a persons blood type.

Which parent determines the blood type of the child?

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.

Which blood types are not compatible for pregnancy?

When a mother-to-be and father-to-be are not both positive or negative for Rh factor, its called Rh incompatibility. For example: If a woman who is Rh negative and a man who is Rh positive conceive a baby, the fetus may have Rh-positive blood, inherited from the father.

What blood types are most compatible?

Donors with blood type O can donate to recipients with blood types A, B, AB and O (O is the universal donor: donors with O blood are compatible with any other blood type)

Can a child have a different blood type than both parents?

Yes, a child is able to have a different blood type than both parents. Which parent decides the blood type of the child? The childs blood type is decided by both parents blood type. Parents all pass along one of their 2 alleles to make up their childs blood type.

Can your blood type change?

Can your blood type change? Usually, you will have the same blood type all of your life. However, in some cases, the blood types have changed. This has been due to unusual circumstances, such as having a bone marrow transplant or getting certain types of cancers or infections.

Can O+ and O+ have a baby?

That means each child of these parents has a 1 in 8 chance to have a baby with an O- blood type. Each of their kids will also have a 3 in 8 chance of having A+, a 3 in 8 chance of being O+, and a 1 in 8 chance for being A-. An A+ parent and an O+ parent can definitely have an O- child.

Whats the rarest blood type?

AB negative Whats the rarest blood type? AB negative is the rarest of the eight main blood types - just 1% of our donors have it. Despite being rare, demand for AB negative blood is low and we dont struggle to find donors with AB negative blood.

How did my blood type change?

Usually, you will have the same blood type all of your life. However, in some cases, the blood types have changed. This has been due to unusual circumstances, such as having a bone marrow transplant or getting certain types of cancers or infections. Not all of the changes in blood type are permanent.

What is special about O positive?

Type O positive blood is given to patients more than any other blood type, which is why its considered the most needed blood type. 38% of the population has O positive blood, making it the most common blood type. Those with O positive blood can only receive transfusions from O positive or O negative blood types.

Can blood type change?

Can your blood type change? Usually, you will have the same blood type all of your life. However, in some cases, the blood types have changed. This has been due to unusual circumstances, such as having a bone marrow transplant or getting certain types of cancers or infections.