Can two people with different blood types have a child that has neither parent's bloodtype?

Answer 1

A parent of genotype A0 and a parent of genotype B0 can yield a child of blood type A, B, AB or 0. Also if a parent is AB and another parent is genotype B0, then the child can be A, B and AB... So what you ask is quite possible.

Edit: After seeing all the answers below, I feel really bad about the level of basic biology knowledge in the world. Not only that but the willingness of ignorant people to make a comment on a scientific question is even more frightening as they freely talk about urban legends as if they were facts. This stuff being 9th grade biology class material only deepens my freight. To top that now we learn that even pediatricians do not know what they are talking about. If kids get their mom's Rh, how do we get siblings of different Rh? Believe me there are quite a few of those.

Answer 2

Yup. Blood types are genetically determined; if both parents are carrying the allele for a recessive blood type, e.g. type O, and the child inherits it from both sides, it will have that blood type expressed, although neither parent does.

Blood type genetics are a little more complicated than that, of course, because partial expression is possible, but that makes it more likely to differ from either parent, not less likely!

Answer 3

Yes they can. It's kind of a complicated system, how children's blood types are determined.

I do know that if both parents are Type A, then all of their children will be, too. It's the only type that is totally pure.
(I know this because both my parents, and also my husband, are Type A, and all my siblings and all my children are also Type A.)

Here is a link that has a great chart, which shows what possible blood types the children will have, with whatever the parents have. This says that A & A can have A OR O children, but our doctors have always told us that two type A parents will always have type A children.

http://www.paternityangel.com/Articles_zone/Blood/BloodType2.htm

Answer 4

I asked my pediatrician about my kids' blood types. My husband (the father of my children) and I are both A+. She said that children always get the same Rh as the mom, but that two A's could produce children who are A or 0

Answer 5

yes it is possible in the following case: if both parents are "heterozygous". For example mom is A, Iai, I being the recessive allele for blood groups. And dad is B, Ibi. So inow you have Iai x Ibi, which gives you the following results, IaIb, Iai, Ibi and ii so the kid can be AB or O (ii).

Answer 6

yes.
if mom and dad both have heterozygous type a blood:
A O
A AA AO(daughters)
O AO OO(sons)

the chance is that 25% of the children produced will be O type. and only the son gets different blood type

Answer 7

Do a search on blood types, and you will hopefully find a better answer than most of the ones you are getting here. It is VERY common, in fact, it is more common than not.

Answer 8

Yes. A person with A blood, but Ia and i alleles can have a child with a person with B blood and Ib and i alleles. Each person has one dominant allele and one recessive allele. If they each give the baby one recessive allele, he/she will have i and i and will have O type blood.

Answer 9

Yes. It's possible to biologically for this to be possible. People answering this question might be thinking about other type of species. Believe it or not someone just asked the same question online. These links should help enlighten your answer.

Answer 10

I don't think so. The child has to have either parents blood type.