1. Human Pedigrees
Inheritance Patterns

2. Autosomal Dominant
Every affected person has at least one affected parent
Each generation will have an affected individual
e.g. Huntington’s Chorea, brachydactyly, polydactyly, achondroplasia

3. Autosomal Recessive Individual expressing trait has two normal parents
Two affected parents cannot have an unaffected child
e.g. PKU, cystic fibrosis, albinism

4. X linked pedigree
Affected males are connected to unaffected female carriers
There is no direct male to male inheritance