well they give you the okay on tag in november right? and u can fill out and submit the com app anywhere between nov 1-30 i think...not sure though. im going to wait though and why is your bame cleangirl...r u applying to UCSB or something?
You definitely have to fill out and complete the UC app just like everyone else. But you will hear back about TAG before that. Each UC is a bit different though. I tagged to UC Davis (am going there now) and they actually say it is approved and as long as you complete all planned classes and maintain the GPA you are in. Some UCs say it has been received and you have to wait until April to find out if you are in. So when I filled out my UC app I knew I was 99% sure of being accepted to Davis. There is a place on the UC app where you check if you have submitted a TAG app and to which school. The only thing having the TAG approved did for me, in regards to the UC app, was I didn't stress over my essays as much since I knew I was pretty much in.
NO! You have to fill out the UC app even if you are accepted through TAG! If you are accepted through TAG and you didn't submit a complete UC app, they CAN and WILL revoke your admission. Its one of the requirements for TAG! The application takes time.. you should start ASAP.