will two 0+ parents produce an 0+ baby?

Question

the mother is o+ and the father is too, will that make an o+ baby? What if the mother is O+ and the father is type B, wont that make the babys blood type BO or something or that nature?

Answer 1

It's really not as simple as all that.

Two O blood type parents will produce an O blood type baby because O blood types don't have any A or B proteins--which are dominant. The Rh factor could be positive or negative, based upon the genetics of the grandparents. Since Rh+ is dominant, both parents could have one parent each who is Rh-; therefore, there would be a 25% chance their baby would be Rh-.

As far as an O blood type getting together with a B blood type, the genetics of the baby--again--depend on the genetics of the grandparents. If the father with the B blood type (the dominant gene) has one parent who has an O blood type, there is a 50% chance that a baby produced with an O blood type mom would have an O blood type as well.

The site below explains it.

Answer 2

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Answer 3

If you were only going by that, the baby would be either O or B. The RH factor is a seperate issue.

But it depends on the recessive genes as well. Both of my parents are O+, but of 6 kids, 3 are O+ and 3 are O-. We know that my paternal grandmother was O-, so we also know that my Mom has a recessive gene as well for the negative RH factor. I had a son who was B+ (I'm O- and father was O+) which means that one of my parents was recessive for B and the father of my son is also recessive for B.

I've included a couple of articles below. The first one is a little easier to understand. The second is more detailed, but not as good of a source.

Answer 4

Your baby can be either O+ or O- if both parents are O+

Because you have two alleles and O is recessive so the only way to have blood type O is to have two alleles. Which means you only have O to pass to your child.

RH+ is dominant meaning that you could have a + and a - or two ++. If either you or your husband is ++ all your children will be +. If you are both +- then there is a chance that your baby will inherit two - and be -.

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Now B is dominant meaning that to have type B you can either be BB or BO. Meaning that the baby from these two could either be B or O. Unless the father is BB in which case all children would be B. You can't really find out if dad is BB or BO.

So:
OO + BB = BO (or type B)
OO + BO = BO or OO (so type B or O)


Hope that makes sense.

Answer 5

If both parents have -O- positive blood, then there children will have 0 positive blood. If one of the parents are 0 positive and the other is b positive, there child will probably be B positive, but there is a slight possibility it may be 0 positive. The reason this is because B is dominate over 0. The types of blood are A , B , AB and 0 - all positive and all negative. Positive blood is dominate over Negative blood. I hope this helps.♥

Answer 6

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Answer 7

Generally... Two parents with type "O" blood (from the ABO grouping scheme) will *almost* always produce a child with type "O" blood. (There is always the chance of a mutation, or a fluke recessive "A" or "B" gene.)

Mix an "A," or "B" parent and an "O" parent, and you end-up with an "A" or "B" child that has a 50% chance of passing-on type "O" blood.

Mix parents with "A" & "B," and you end-up with "a universal recipient" (assuming neither parent has the recessive trait of "O" as inherited from (on of) their parents), or AB

A "-" father and a "+" mother results in a "+" baby.
A "+" father and a "-" mother results in a "+" baby, and serious medical conditions, which has a greater and greater chance of KILLING the foetus in utero after the first child (as the mother's body creates anti-bodies that attack the foetal tissues). These antibodies remain in the woman for years. The second and all later children also have a significant cumulative chance of dramatic muscular, neurological, or other systemic damages.
Note: the Rhesus typing system is also (if I remember correctly), bi-allelic, meaning that the child inherits one allele from each parent, so two "+" parents *can* produce a "-" child, since the "-" blood type is simply a lack of antigens on the surface of the blood cells.

These are the results of mixing the two most common blood typing methods...ABO and Rheses...there are about 20 some other methods that have effects I am unaware of.

Addedum: Re: Amy's argument...
Gender has no effect on "strength" of blood type. It is pure genetics. A and B alleles are dominant, while O is recessive. A woman whom is type A whom marries a man whom is type O will produce *only* type A blood children. A type A woman who produces a child eith anything but A or AB had type AO blood, and passed the "O" on to her egg, and the father passed-on the dominant gene, giving the child AO or BO blood (therefore, Types A or B respectively).

Answer 8

In the first situation , that is possible but in the next case, I worry about ABO incompatibility and the baby might be jaundiced when he comes out.

Answer 9

Yes.

Answer 10

well not nessesarily... men usually have a stronger gene and blood type than women and if the fathers father was o+ and the fathers mother was o+ then that would explain the father... if your father... is o+ and your mother, then you were to... or if your mother is say... b+ and you still came out o+... then your father has a stronger blood type... get it? so depending on who has the stronger blood type... thats what your baby will be... the father also might care strong blood type of another so which ever is stronger in him is what going to happen... i learned it in bio1