RH negative blood can't be cloned?

Does rh negative blood have alien DNA and that's why humans, with Rh- blood, can't be cloned?

Why is the Rh- different, because if the blood of an Rh+ fetus gets into the bloodstream of an Rh- woman, her body will recognize that the Rh+ blood is not hers. Her body will try to destroy it by making anti-Rh antibodies.

These antibodies can cross the placenta and attack the fetus's blood cells. This can lead to serious health problems, even death, for a fetus or a newborn. 

Were does Rh- come from?