This PowerPoint takes students through a simple yet thorough explanation of how to complete Punnett squares to predict the genotypes and phenotypes of offspring for 2 traits. Instead of the more typical 4x4 crosses, this lesson will allow your students to answer all of the pertinent questions using two 2x2 squares. I have a degree in biochemistry and genetics, and I have used my expertise to help make this concept as simple as possible for my students and yours. Student not pages with plenty of practice are also available. Don't miss out on this great value!