Today's class focused on pedigrees. Pedigrees are tools we can use to look at the family history of certain traits. They are also very useful in visualizing the inheritance patterns of sex-linked traits. We will be spending the next few days learning to draw and interpret pedigree charts. The video below gives a very thorough explanation of how to use pedigrees to look at the inheritance of many different types of traits as well as their phenotypes and genotypes.