This is a beginners guide to genetics, introducing Gregor Mendel and concepts like DNA, genes and alleles. Phenotypes, genotypes and how to do simple crosses using Punnett Squares are also discussed. This lesson is part of a five-lesson series on Life Science (click for bundle) and supports MS-LS3 (Growth, Development and Reproduction of Organisms) of the NGSS. The handout and included answer key work together with videos and links found at Genetics: The Basics on the How About Science?