3-3e. Pedigrees Chapter 7.4

Human genetics follows the patterns seen in other organisms. We can use phenotypes in one family to determine their genotypes and mode of inheritance We use pedigrees to do this (not the dog food) Basically it’s a family tree

How to read/draw a pedigree….. Girls = Boys = Shaded in is the trait we are following Homer Marge Lisa Maggie Bart

If the phenotype is more common in males, the gene is likely sex-linked. How do you use a pedigree to determine mode of inheritance? Guess and Check