Don't know if I can share my brain...haha, but I'll summarize what I know about evolution; hope this helps!
-fossils (types that are found, eras they're found from) I haven't come across any questions in the destroyer or topscore or kaplan tests that I've taken, so it's up to you if you want to study it.
-know the chronology of the eras (paleo, meso, ceno. look up geographical time scale, and just remember that roughly...no need to go too in depth)
- homologous and analogous structures: know what they are, and some examples (i.e. wings of a fly and wings of a bird = analogous)
- embryology (this really should be under classification. know briefly the embryological development of the different phylums)
-vestigial structures (what they are and examples. i.e. the appendix is a vestigial structure)
-any geographic barriers and how and why they would occur
-the theories of evolution by Lamarck, Darwin/Wallace.
- -acquired characteristics
- -darwin's theories of natural selection, inheritance (etc.)
-these might come up on the test, so know the difference between Darwin's theories, and Lamarck's theory.
-population genetics (Hardy-Weinberg! almost guaranteed to come up at least once. know it well.)
-Microevolution (genetic drift, gene flow, mutation, etc.)
-speciation (adaptive radiation is a big one, in all the practice tests i've taken, one question about this has popped up. gene variation, adaptation, isolation, convergent and divergent evolution are all a part of this. know it well!)
-and also know what element are believed to be found on the earth prior to primitive life. methane, H2S, etc.
whew! that was a lot to remember, i might have missed something. i studied the kaplan book for the bio section, as well as my biology notes from class for the topics i wasn't sure about. this stuff is pretty good, i think, for what the test will ask for in evolution. jeez, now that i look back on it, i remembered a lot!
hope this helps!