Hmm...86% on my recent bio exam.
Okay, not bad, I'll take it. Hilariously enough, multiple choice (my favorite type of question) portion is what killed my score the most. I kicked ass on short answer, especially when asked when how sickle cell anemia forms when position 6 from the amino terminus is changed from a charged glutamate to a valine. It's because valine is a hydrophobic amino acid, which causes part of the hemoglobin to fold inwards, creating an indentation that leads to a "sickle" shape of the red blood cell. That's not all there is to it, but it was sufficient enough to get me full credit.