1. Pedigrees

2. Pedigrees
Pedigrees are very similar to family trees except they show inheritance patterns of a trait in addition to connections between family members.

3. Showing Relationships
Single line = married
Double line = married to a relative
Each row down is a new generation

4. Sex Linked Recessive Mainly in males
Sons of affected females ALWAYS have it

5. Autosomal Dominant Generally appears in every generation
Kids of an affected patent have a ~50% chance at getting the disease

6. Autosomal Recessive Doesn’t necessarily appear in every generation
If two affected partents have the disease ALL of their children will have it as well