Read chapter 5 in your textbook.

I know, that doesn't sound like a lot of fun, but we are about to start talking about some of the more difficult concepts of the term, linkage and mapping. This stuff will not be on the second exam, but don't procrastinate about trying to grasp it all — I lose more students every year when we start doing the quantitative genetics that is needed to understand linkage. It's also material you'll need to understand in order to do the upcoming experiments in the lab.

Also, take a stab at the following problems: chapter 5, problems 8, 9, 10, 11, 12, and 13. Once we've covered the methodology of the triple point cross, after spring break, you'll be better prepared to do 14, 15, 16, 17, 20, and 24. Don't panic if that last batch look impossible right now, we'll be going over that sort of problem in great detail later.