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What blood type will a baby have if the parents both have the same blood type?


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Wiki User
2011-06-27 08:56:12
2011-06-27 08:56:12
  • The two AB parents could have any of an A, B or AB, but not O.
  • The two A parents could have either A or O children, but not B or AB.
  • The two B parents could have either B or O children, but not A or AB.
  • The two O parents could only have O children; they cannot have have A, B or AB.
  • If both parents have rhesus-negative blood, so will their children. If both have positive, the child might be either.

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It depends on both parents blood groups!

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Yes, blood type is, within reason, random. It's most likely that the baby will be of the same blood type but I don't think it's definite.

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No. Often a child can have a completely different blood type from their parents or even the same. It really depends on their genetics.Some combinations of parents are unable to get children with certain blood types - assuming no mutations occur.Regarding the AB0-system:If both parents have blood type 0, all their children will have blood type 0.If both parents have blood type A, no children will have blood type B or AB.If both parents have blood type B, no children will have blood type A or AB.If both parents have blood type AB, no children will have blood type 0.Of course you can be more specific if you know the parents' genes.


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