Khan Academy
Khan Academy: Classical Genetics Unit Test
Take this 9-question unit test over classical genetics.
CK-12 Foundation
Ck 12: Life Science: 3.2 Mendel's Laws
Understand the basics behind Mendelian genetics.
Other
Design and Colour
A site by watercolor artist John Lovett. He describes the Elements of Art and Principles of Design and gives tips and techniques for watercolor painting and for composition.
Washington State University
Washington State University: Learning Mendelian Genetics
A decent lab activity which could be used to introduce the concept of dominance and autosomal dominance. This site provides a coin toss activity to learn about Mendelian Genetics.
Other
Polycystic Kidney Disease: Autosomal Dominant Pkd
A good example of an autosomal dominant disorder occurring in polycystic kidney disease. Also supplies a little background definition to the process.