Board Thread:General Discussion/@comment-25301131-20150310010922/@comment-26210604-20150315230636

OnlyOnTuesdays88 wrote: Mr B Natural wrote: Cellomaster888 wrote: NOT A TWIN. author has SIX FINGERS, Stan has FIVE FINGERS Um, it's called fraternal twins. You know, the kind of twins we've been watching a SERIES about for the past TWO AND A HALF YEARS?

Pretty sure they're identical, actually. Little differences in identical twins is possible. A good example of this is Tia and Tamera Mowry from Twitches and Sister Sister. They are both exactly identical except for the fact that one has a mole on her face and the other has a mole near her neck. Then there's Dylan and Cole Sprouse, who have a different build but are otherwise identical.

Identical twins are born by one cell getting split into two. Once they're two separate cells they start forming into identical forms, but it's possible for little things to get messed up or differ, like a mole or an extra finger.

Also, as for the last part of your comment Mr B Natural: lol. Idenitical twins cant be different sexes. As you said its a single egg splitting into two. So its the same sex chromosones for both twins either both male or both female (biosex wise at least). Dipper and Mabel are obviously fraternal twins purely because their a boy and a girl. Grunkle Stan and the author are twins as confirmed by the end code 'The Oringal Msytery Twins'. So yeah twin theory confirmed.