Those bloodtypes and jobs are almost mirroring that of my family, hah! Although, my dad's a hospital "IT" nurse (for radiation oncology stuff) rather than an IT guy.
@Bluefox_1 I know, but that's what I mean, the fact that the child expressed a recessive gene when both parents had a dominant one is extremely rare. I can be mistaken, genetics is not my best subject, but I think that's not how it would work out
@SpicyNuclearChorizo Someone with type A actually has AO. Same with B, it's actually BO. So, If somehow the kid get both O's from his parents he's OO or type O. Hope it was comprehensible enough^^