Question about BLLOD TYPEs [A+ plus A- = ?]

M. Jane Harper jharper at ITSA.UCSF.EDU
Sun Oct 24 13:57:19 EST 1993

On 24 Oct 1993 leder at rcf.rsmas.miami.edu wrote:

> Here is a hopefully easy question for someone out there:
> I would like to know what are the possible blood types of a child
> of parents who are A+ and A- ?  Very Important! Thanks for your response.

It would depend on the parents' genetic makeup.  For a blood test to turn
out as type A, the actual genes could be AA or AO; if mom and dad are both
AO, the child could turn out type O.  Otherwise the only possible type
would be A.  Rh would probably be + in any case.  So your answer is A+ or O+.
> When blood typing is used (or was before DNA testing ?) in paternity suits
> -are they checking this A+,B,O-etc or is it something else?  Can blood type
> be used for that purpose?

Yes, and Yes.  :)

Jane Harper, MS, RN, CCRN
Predoctoral Fellow, Physiological Nursing
University of California, San Francisco
jharper at itsa.ucsf.edu

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