Talk:Malcolm Rochester/@comment-27670752-20171026090717/@comment-27670752-20171026185017

If both parents have the negative RH factor, their offspring should have the same RH factor 100%. Scientifically speaking, it's impossible for Archie to be A+ unless one of their parents isn't actually their real parent. PS did this with the triplets in Season 3. It's something that seriously bugs me but eh.... wut can you do?