A person with A positive blood may be a carrier for O negative blood. If the other parent is also a carrier of those traits, the baby could be O negative.
Negative is recessive...you can have a negative also.
yes
yes
Yes
It takes two rh negative parents to produce an rh negative baby.
Yes, the baby can be O+, it should be noted though if the mother also carries the trait for a negative Rh factor the baby clould also be O-.
o negative
It's possible if both parents are heterozygous for both Rh factor and ... type-A-ness, whatever the word for that is. That is if they're both +- and AO genetically, they'd both have blood type A positive, but they'd both have the potential to pass along blood type O and Rh factor negative. If the baby gets O- from both mom and dad, then the baby would be OO -- and therefore O negative.It's not necessarily what you would expect (7 times out of 8, the baby would be type A, Rh postive, or both), but it is possible.If they have a B negative baby, mom's been fooling around on dad.
YES. Blood type is determined by two alleles. An "A" individual can be homozygous "AA" or heterozygous "AO" and still be considered type A. The same is true of a "B" individual. If the father is "AO" and the mother is "BO" then statistically, they have a 25% chance of having a child that is "OO" or type O.
No, they cannot.
No, they cannot.
of course.