Genetics and Blood Typing in newborn

Patient

Q: If one parent's blood type is O negative, and the other parent is O positive, can their child have a bloodtype of A positive?

Doctor

A:   If both parents have O blood type, their child would have only O blood type as well.
The O blood type is a recessive trait and therefore a parent with a O blood type could only pass on the O gene to their child. If both parents are O blood type then, both parents would pass on the O gene to the child.
I hope I cleared your doubt.

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