We all get mutant seedlings from time to time. I've had some that were born without cotyledons, ones with 3, and even one with none, but this is a first. This little girl has a single cotyledon that looks like 2 conjoined, and a single leaf coming out of the center. It's been like this for over a week, so I'm thinking it may just stall and die. Excuse the blurry pic. My camera is terrible and my photography is worse. The strain is Dinafem White Widow.