Can a blood type O have kids with AB?
The ABO blood group system is determined by the presence or absence of specific antigens on the surface of red blood cells. There are two main antigens, A and B, which can give rise to four different blood types: A, B, AB, and O. People with blood type AB have both A and B antigens on their red blood cells, while people with blood type O do not have either antigen.
When a person with blood type O (OO genotype) has children with a person with blood type AB (AB genotype), the possible blood types of their children depend on the genotypes of the parents. The AB parent can only pass on A or B alleles to their offspring, while the O parent can only pass on O alleles.
The following table shows the possible blood type combinations for children of parents with blood types O and AB:
| Parent 1 (O) | Parent 2 (AB) | Possible Blood Types of Children |
|---|---|---|
| OO | AB | A (AO), B (BO) |
| OO | AB | AB (AB), O (OO) |
As you can see from the table, it is possible for a person with blood type O to have children with a person with blood type AB, and the children can have either A, B, AB, or O blood type.