I don't know if any of this is true but in my immediate family the Rh factor is almost split down the middle..and I have quite a few redheads including my own child in my family. My father was Rh neg and he had jet black hair 100% Irish ancestry…with how genetic variation is dispersed through offspring many could still retain such genetic profiles whether they are Rh neg or positive. The Rh has to be present in both parents even if both parents are Rh positive..that alone makes me question your view…
This is horseshit, I have a Rh negative child and Rh negative parent and 2 Rh negative brothers. Literally my family is split down the middle with both Rh neg and pos blood types. Its a gene variant that some carry and my family has equal distribution. I am Rh pos and my oldest child is Rh neg and my youngest is Rh positive. Apparently I have Rh neg as part of my gene structure otherwise neither of my children would be negative….