No, like charges repel
not necessary. If father of the baby is Rh negative, Blood group of the baby can be Rh negative.
If a person has the Rh factor, then they are positive. If they don't have the Rh factor, they are negative. The Rh factor is dominant, so a mother with it would have an Rh positive baby even if the...
These are specific blood types in a human being.
No, this will not work. Postitive to Negative/Negative to Positive will work.