This is the sixth in my series of ‘genetics explainer’ videos on YouTube for students, parents and teachers. The feedback I have received has encouraged me to continue with this series. Some teachers have told me that these videos are of great use in a flipped-classroom instructional strategy.

We have learned more from Mendel than just monohybrid and dihybrid crosses and his Laws of Segregation and of Independent Assortment. We have also learned an algorithm for looking at phenotypes, genotypes, gametes and then offspring. In this video, I examine how we use these same techniques to solve non-Mendelian genetics problems. How do we explain three phenotypes You can also find me on Twitter