1. Yeah they are pretty yellow, looks to me like they want N, unless you've overfed them, then it could be locking out N
2. Cant always always rely on a breeders description
3. This is normal, wait until the daylight hours start getting shorter, the sex will show
4. They do that sometimes, keep an eye on em' they should straiten out

Short and bushy you say? When I think short and bushy, I think indica dominant. But after seeing those leaves I can tell they have plenty of sativa.
What strain? Breeder?