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Jonathan has type O blood. What must his parents be for Jonathan to get type O blood?

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User JuJoDi
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1 Answer

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Just like eye or hair color, our blood type is inherited from our parents. Each biological parent donates one of two ABO genes to their child. The A and B genes are dominant and the O gene is recessive. For example, if an O gene is paired with an A gene, the blood type will be A.
User Harriett
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