Applying undeclared/undecided to USC

<p>Hi everyone, I am new to this board and need some advice. I am hoping to apply to USC for the 2012 year. I plan to major in Biology and minor in maybe English. My school counselor is telling me that it's hard to get into USC to take Biology as a major. My question is that if I go undecided can I write about my interst in Biology in the USC supplement essay prompt? Any advice will be helpful.</p>