Is it possible that one's parents blood group is differ from their child blood group if then how?

Question

I found that one's parent blood group is differ from their child..just like father blood group is A positive n mom B positive n got their child group is O positive.....n if it can then how could be can u explain me please?

Answer 1

Very generally...

Everyone has two blood group genes, one from each parent. Some are dominant - this means that if you have one of that gene you will have that blood group. Some are recessive, which means that you only have that group if you don't also have a dominant gene.

So it's possible for your example to work if dad has A and O (so he is type A) and passes on the O, and mum has B and O (so she is type B) and passes on the O. Baby now has O and O, so is type O.

Answer 2

O is recessive and if both parents have an O gene and the child gets both, it will have O blood.

Answer 3

Each parent has two alleles for blood type. They can be A B or O in any combination: AA, AB, AO, BB, BO, OO.

O is considered recessive and A and B are both dominant. That means if you test the blood of someone who carries the A and the O, their blood type will be A.

If the person carries B and O, their blood type will be B.

Only someone who is O O will test as type O.

A parent who is AO would be considered type A and a parent who is BO would be considered type B. Each parent would give one allele to their child---but there is no way to know for certain which one it could be.

The AO parent could give the A or the O.

The BO parent could give the B or the O.

If both parents give the O, then the child would be OO and therefore "type O" blood.