Can a mother with blood type A+ and a father with blood type B+ have a child with blood type O+?

Answer 1

Yes, definitely. There is this situation:

Mother has type A -- which means each parent contributed to that trait -- say one parent contributed the trait "A" the other parent contributed trait "O" -- the child would be type "A" (AO = A).

Same with the Father -- each of his parents contributed to that trait -- say one parent contributed to the trait "B" the other parent contributed trait "O" -- the child would be type "B" (BO = A).

Now those two are parents, so there is the following mix that can happen:
AB (25% chance) AO (25% chance)
OB (25% chance) OO (25% chance)

So yes, the child can have trait (type) O blood.

Answer 2

Yes it can be when the blood genotip in mother's DNA is AO+ and the father is BO+. So the probability of their children have blood type O is 25%. It happen when the gen O in father and mother meet when the father's and mother's gamet cells(sperm and ovum) fertilize.

Answer 3

Yes, definitely. For every trait you have, you have two genes. If your mother has an A + and an O + gene, and your father has a B + and an O + gene, they could have a child who is O +. Here is a website that explains it more fully:

http://www.dmt123.com/other-health/693-dmt123-1.html

Answer 4

yeah, why no longer. AB from father and 00 from mom would bring about B0=B and - - from father + - from mom would desire to bring about -(adverse). So, the newborn would have B - blood form.

Answer 5

Yes, My mother is A+ my father AB+ me A-.

Had to be different.

Answer 6

why not! I am o postitive and my husband is b postive and our children are all o negative

Answer 7

yep sounds about right!