Can parents, one A positive, the other AB positive, have a baby whose blood type is A negative?

Answer 1

Yes is it possible. The AB parent gave out the A and the A parent either gave and A or an O giving the child type A. The positive and negative are RH proteins. Both parents have the Rh protein but have the genotype +- for it. Both gave out the -'s.

Answer 2

This is an interesting question and having read the info on the websites below, I understand that there IS a chance. (The 2nd website illustrates this). The rhesus Negative gene is recessive (ie., non-dominant) and the Rhesus positive gene is dominant. Even though both parents may be Rh Positive, they may also carry the recessive negative gene. So if two Rh Positive parents both carry recessive negative genes, then there is a 1 in 4 chance of a baby being RH negative and also a chance of other children carrying the recessive negative gene, (although they will be Rh Positive). If both parents only have RH positive genes and no recessive negative gene, then there is no way the baby can be RH negative. Remember that in genetics some genes are dominant, and some are recessive. The recessive genes give way to the dominant ones, but can be passed on to children. If a child ends up with two recessive genes (rather than one dominant and one recessive) then they take on that characteristic controlled by the recessive gene. Otherwise the dominant one wins.

Answer 3

if you go to the blood donor website (www.blood.co.uk) and then the link to All about Blood, it come up with a calculator for possible blood types of a child using the parents blood types. This should tell you whether a baby can have A- blood

Answer 4

Yeah, the group is fine. It's the rhesus type that has changed. one parent may have been +- and the other +-. so the child has taken on the negative rhesus. Sounds ok to me.

Answer 5

No. The figure who's blood type is A might want to have the genotype AO, that could enable him to have an O infant with O blood, yet the different figure has to bypass on both an A or a B allele to the newborn, and the newborn might want to purely be O if he had neither an A nor a B allele. The effective and unfavorable are advantageous because effective is the dominant phenotype so both mum and dad might want to be heterozygous for it, yet someone with type AB blood actual won't be able to have a baby with type O blood (until eventually a spontaneous mutation occurs contained in the gamete that renders the allele non-functional, that is not likely yet conceivable)

Answer 6

I'm negative 0 and my ex husband is AB postitive and our son is B positive. unusaul?

Answer 7

yes and if the mother is A positive needs to get a shot so her body does not reject the baby for considering it and intruder on her body...

Answer 8

Check out Discovery magazine last month

Answer 9

yes its only o blood types that you need a certaint parents to have Im O

Answer 10

yes