Twins: On White, One Black, Which Gets Affirmative Action?

In this article, a "mixed" woman -- one parent black African the other British honkey -- makes a baby with a honkey, and they have twins. One comes out looking black, the other white. Will one or both have the lower "affirmative action" SAT standards when applying to the University of Michigan? (Ie, will one have to study harder than the other, or will both need to study less than their honkey and Asian competition?)