2 doctors weighed in:

Can a father with ab positive and a mother with ab negative have a b positive baby?

2 doctors weighed in
Dr. Barry Bergman
Pediatrics
1 doctor agrees

In brief: Yes

Ab blood type you have one gene for a and a gene for b.
If both parents give the b gene the child will be b type blood. Rh + can be one or both genes rh+ or one - and one + . Rh- you both genes are rh-. So if baby got rh+ form one parent and rh- from the other the baby would be rh+.

In brief: Yes

Ab blood type you have one gene for a and a gene for b.
If both parents give the b gene the child will be b type blood. Rh + can be one or both genes rh+ or one - and one + . Rh- you both genes are rh-. So if baby got rh+ form one parent and rh- from the other the baby would be rh+.
Dr. Barry Bergman
Dr. Barry Bergman
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