Last week I noticed that one of my BPs doesn't seem to have a forked tongue!

She's an '07 900 gram subadult. She's perfectly healthy otherwise: I took her to the vet when I got her and she came back clean. Of course, we weren't really paying too much attention to her tongue... but it doesn't seem to affect her sense of smell. She flicks about as often and as quickly as everybody else, and she eats just fine--she's put on 300 grams since I got her.

I also have a half brother of hers, and his tongue looks perfectly normal.

So I'm wondering: is this a common condition? Or some oddball mutation? Or does it signal health problems?