"Heads boy , tails girl . Davey's gonna thank me for this later " "Jack , you can't flip for the baby's gender " "sure you can " "no you can't " "what ? What ? Why ?!" "Because it's in their chromosomes. If the baby gets an XY it's a boy and a XX it's a girl. " "so your saying its up to that DNA crap ?" "Yes Jack ," "So how do we know if it's gonna be a boy of girl without Flipping for it " "we go to the doctors " "and they flip the coin?" "No they take a machine that's like an x-Ray and they put it on the stomach . And they zoom in -" "does it hurt ?" "No it's tickles , anyway they look at the baby and zoom in on their legs . Then they take pictures and print them of them " "so then we find out if it's a boy of girl ?" "Yep "Katherine said smiling "so why did you tell me this ?" "I'm pregnant "