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Monday, May 20, 2013
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NetWellness is a global, community service providing quality, unbiased health information from our partner university faculty. NetWellness is commercial-free and does not accept advertising.
Monday, May 20, 2013
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Inherited Disorders and Birth Defects |
Blood type02/19/2008 |
My question is if my blood type is O what other blood type would mix with mind to make my daughter blood type be B-? Because who I thought was her father is O as well so that tells me that he is not her father.
In general, you are correct, if both parents have blood type O then any child they have should also have blood type O.
ABO blood types are inherited. A person’s blood type is determined by the inheriting 1 of 3 different forms of a gene (called alleles) from each parent - in this case - A, B, or O.
If both parents have A alleles - then the child will have AA genotype and have A blood group.
If both parents have B alleles - then the child will have BB genotype and have B blood group.
If both parents have O alleles - then the child will have OO genotype and have O blood group.
If one parent has A and one parent has B - then the child will have AB genotype and have AB blood group.
If one parent has A and one has O - then the child will have AO genotype and have A blood group.
If one parent has B and one has O - then the child will have BO genotype and have B blood group.
Both A and B forms of the gene are dominant over O. This means that if a person has AO or BO alleles, they will have A blood type or B blood type. People who have type O have an OO genotype - so they would not have children with either A blood type or B blood type.
You would expect that if you are O blood type (which means you have a OO genotype) and your daughter has B blood type (which means she has a BO genotype) then her father would also need to have B blood type (could be either BB or BO genotype).
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Anne Matthews, RN, PhD Associate Professor of Genetics School of Medicine Case Western Reserve University |
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