There are some great sites out there to learn the basics. Most of our readers might not need to learn those themselves, but they might need to teach them or at least give out resources to people who need (or should learn) them. The University of Utah has a great site: Learn.Genetics (TM).
And the “Cell Cize and Scale” interactive flash is cool.
And while I’m at it there is a good intro to Essentials of Genetics at Scitable (and we’ve had a tip of the week on Scitable Classrooms before you might to check out so you can create a class on Genetics if you so desire).