Genetics and Evolution
While Campbell's covers most of the genetics and evolution you need to know, you can get practice with more obscure genetics concepts with with good genetics problems through MIT's online course here or through the course page for a North Dakota State University course here.
At the NDSU link, one of the important categories is here: Mendalian Genetics. From this link, study the chi square test, epistasis, pleiotropy, and penetrance and expressivity. Another important category from the NDSU link is here: Genetic Linkage. From this link, study the triple point cross and measuring linkage in humans. Finally, in the Genes and Mutation category, study Complementation.