Rh- women can't successfully breed with Rh+ men due to antibodies that will attack the baby built up during 1st pregnancies. These women have to have a Rhogam shot. I am an Rh- woman who had one, even though I married an Rh- man and baby was same.
Idk how to archive, so I won't link, but even some info can be found at Red Cross.
Other shit, too, like scientist s can now clone Rh+ blood, but Rh- blood can't be cloned. Clones=slave race, not negs.
Obama is AB-, and all pres for past ~50 years have been neg. Statistical anomaly. Prince Charles is O-, as is the Emperor of Japan, despite it being rare in Asians, an exception being the Oriental Jews. Elites are always negs.
Plenty more bizarre yet verifiable info online.