yes
The possibilities include B positive, B negative, O positive, O negative.
Yes, they can.
no
yes
Yes.
Yes they can.
If your parents are A negative and B positive, you could have blood type A or B, as you inherit one blood type allele from each parent. The Rh factor (positive or negative) would depend on whether you inherit the Rh allele from your B positive parent.
Yes, it's possible but there are very slim chances. It depends heavily on the genotypes of both parents
Yes.
b posgative
No. The parent's possible blood types are BO and OO. If the child is AO something is incorrect. Neither parent has an A to pass along.
No. Neither parent has the B antigen. Only the O antigen can be "masked" by another; if A+ parent had the B gene they would be AB+, if O- parent had it they would be B-.