Personally found my Biology background to be an advantage on the LSAT, particularly the readingcomp. section for all the science passages. However, I agree with other posters that if you are going for a dual degree then take the GRE.
Sections have varied- sometimes it’s readingcomp, most recently logic games, and earlier on it was always logical reasoning. Hopefully can drill down on some issues in the next couple weeks! Thanks for the encouragement :)