It might help to differentiate between dad Crocker and dad Egbert. Dad Egbert (John's dad) was born from nanna/old lady jane and an unknown (?) father (not jake), while dad Crocker (Jane's dad) was born of poppop/old man john and an unknown (?) mother. Thus the two dads are genetically different and are really two different people, even if they look and act the same. Children of Jane/jake would actually probably turn out more like Jade and John than either of the dads, too. I think. Idk science

Yes

~Mod T