yes
no
yes they can
Sure.
You could have several children with different blood types. you get your blood type from either parents or even grand parents.
of course.
yes
Yes. If you cross parents with AB and O, you can have children with either A or B blood types.
Since O blood is recessive and B is dominant, this scenario would be possible
it is rh negative and rh positive that u dont want to mix not the a b o types it is the + or - two ++ mom n dad or two -- mom n dad not 1 positive(+) and 1 negative(-)
It is a little difficult to say but there is a question of parenthood here. The child cannot be type B if both parents are seen to be type O. The father must have a blood type of AB or B. Please see... http://www.dna-bioscience.co.uk/did_you_know_abo.shtml
The child would be AB plus, so yes.
Barack is type AB, so there are several possibilities: Mom A, Dad B Mom B, Dad A Mom AB, Dad A Mom AB, Dad B Mom A, Dad AB Mom B, Dad AB Mom AB, Dad AB