Blood Types Problem Set

Problem 3: What blood type would the father be?

If the mother of a child is blood type O+ and the child is A-, what blood type would the father be? Does the Rh factor of the child being - mean that one of the parents has to be negative? Both of my parents are Rh - all of us siblings are Rh- as well. Could two Rh- parents give birth to a Rh+ child? and versi versa? Thanks for all your help. --MaryEllen

The father could be:
A. A+, A-, or O-
B. A+, A -, AB+, or AB-
C. B+, B-, or O-

The Biology Project
University of Arizona
Thursday, October 23, 1997
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