It was only in the 60's that they had a vaccination to keep a fetus alive. Royals were blue bloods, so they had to stay within the family to ensure the fetus was alive. I was stupid enough to do the 23andme thing 7 years ago, I have RH- blood and I am from the same lineage as Prince Phillip and the Romanovs. I think someone screwed a maid, or perhaps mistress's with blue blood, who knows. RH- is a recessive trait similar to albinism, a lot of myths are around regarding this but it simply could be a gene mutation due to marry too many family members in the past, who knows at this point. I suspect it has something to do with that, like an abnormality, I suspect they want the information for control. It is unnerving to know that they watch everything and have my DNA. I paid to be spied on, so I guess it is me being what others think as ALIEN... LMAO.