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My twin brother does not know his blood group, but mine is B. Rhesus+. Does that mean that his will be the same? I am female so obviously we are not identical twins.
Female
asked May 18, 2011 at 03:20AM in General Medicine
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1VotesFraternal twins have no more or less likelihood of sharing genes/traits than any other non-identical twin siblings. If your mother is BO (blood type B) and your father is OO (blood type O), then there remains a 50% chance that he is type O! There are various other genetic setups possible, depending on your parent's blood types, but suffice it to say without knowing your parents blood types, everything from A, B, O, and AB are all possible. Same for Rh factor.
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The content on or accessible through Medpedia.com is for informational purposes only. Medpedia is not a substitute for professional advice or expert medical services from a qualified health professional.
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