1) See the FAQ (
http://kittycats.biz/forum/showthread.php?tid=6434) for a complete definition. '9T' means it shown non-generic trait values for all nine traits.
2) If you mean the SL Marketplace, you can only sell boxes, and you'll need a Magic Box because you can't upload the cat directly. There are threads about it; other will be more help than I. If you mean the general cat market, I'd suggest renting a small stall at one of the more popular market sims, to get started.
3) Not unless you have access to the Pedigrees going back to all the starters. It doesn't matter, though, because genetics are fully determined from the parents. The FAQ covers this, as well.
