That means each
child of these
parents has a 1 in 8 chance to
have a baby with an O- blood type. Each of their kids will also
have a 3 in 8 chance of having
A+, a 3 in 8 chance of being
O+, and a 1 in 8 chance for being A-. An
A+ parent and an
O+ parent can definitely
have an O-
child.
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