Are SAT II Subject tests required anymore?

<p>I missed the deadline to register for one of these tests. I can still sign up for it but there will be an additional fee. Are these tests required anymore? Will it affect my chances if I don't take them?</p>

<p>Would the UCs be more biased towards the student that took the SAT II over someone who didnt? I just took the AP Biology test and don't really think its necessary to take the SAT II Bio again...</p>