If both parents have O positive blood group what blood group would there child be?

Answer 1

Well, let's get out our Biology 101 text book at take a look at the ABO Blood Group section:

Each human has two gene's for their blood type. Each gene can be either "A", "B" or "O". "A" and "B" are the dominant genes, but can both be expressed - called codominance. The "O" is the recessive gene.

So, in order for a person to be "O", they must have two "O" genes and one of those genes comes from their mother, the other from their father. If both parents were "O" then the only gene that can be passed down to a child would be the "O" gene and therefore the child would have to also be "O".

If a child of two parents both blood type "O" is anything else, then the gene "A" or "B" or both "A" and "B" HAD to come from someone else.

Answer 2

In theory both biological parents contributes ABO alleles to the child,each parent donating one allele to the child.And there are 4x4 --16 combinations of possible blood type for example;

Parent I A Parent2 A Child A ,O

Parent 1 A Parent 2 AB Child A ,AB ,B

Parent 1 AB Parent 2 AB Child A ,AB ,B

Parent 1 B Parent 2 AB Child A,AB ,B

Parent 1 O Parent 2 B Child B ,O

Parent 1 O Parent 2 O child O

So if both parents have O positive blood group the likelihood is that the child would be O.

Answer 3

Two of my daughters has 0+ blood type like her father and I. Another of my daughters has A+ blood, again both parents are 0+.

Answer 4

From genes the most likely group would be the same as the parents but it could come from other famiy members via a dormant gene.

I think that is true anyway

Answer 5

some of the kids will take after their parents while others will have their own blood group.

Answer 6

I am pretty sure that the baby would have to be O, but I think it could be either positive or negative. My husband and i are both O negative, so there was no possible way for our kids to be positive, but I don't know that it works the same way if you are positive. Ask your doctor!

Answer 7

erm you they should be an o but there is a chance that they may inherit a grandparents blood group i dont have the same blood group as either of my parent but i share mine with me grandad

Answer 8

You will find that the blood type is determind by the father. Check out the below web site, it say's O is the only possible combination.

Answer 9

That is a good question. I have O Negative and both my parents have another type. They are both deceased so I cannot remember their types but for the longest time, I thought I was adopted...my doctor said that different types are possible though....good luck on your findings.

Answer 10

Impossible to say..there are loads of factors when determining blood groups.