Brian Williams lost his job as anchor of the NBC Nightly News for perpetuating one fiction, and for failing to perpetuate another. The first fiction you're probably familiar with. Last winter, Williams was caught for having repeated a tall tale about his experiences embedded with U.S. troops on a helicopter in the 2003 Iraq War.
If you are Rh-, then you are - - (one negative came from mom and one from dad). If both parents are Rh+ and have mixed genes (+ -), then it is possible that each of them will give the - gene to their child, making the child Rh- (- -). So, to answer your question. Two Rh+ parents can have an Rh- child.....
1 If your parents are both negative, then you are Rh 2  (-). If your parents are both positive or if one of your parents is positive and the other is negative, you can get a blood test and look for the Rhesus factor to know if your blood type is (+) or (-).sk your doctor for a blood typing test. If your parents have different blood types, or their blood type is unknown, you can ask your doctor to perform a simple blood typing test to find out whether your blood is positive or negative.