>>17872240 PB
Animals of the same species can successfully breed with each other.
If a woman is Rh- and her second child is Rh(pos) the child will not survive. At least that is the way it used to be before the Rh- mother was given a shot of RhoGAM after she delivered her first baby.
How is that not fucked up?
That should be the biggest clue ever that there are two species of humans on this earth.