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Can a child have a negative blood types if the parents are both a positive?

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Wiki User
May 18, 2011 11:32AM

Yes!

Parents have two genes for pos/neg blood type, and only one of them needs to be positive for the parent to have positive blood type. Most positive-blooded people have one positive gene and one negative gene. If both positive parents pass on their negative gene, they can have a child with a negative blood type.