1. Pedigree Charts

2. Pedigrees
A chart collecting phenotypic information from a number of individuals related to you
Often used for determining if diseases are hereditary

3. Pedigrees can tell us if traits are dominant or recessive
Which pedigree represents an autosomal dominant trait and which represents an autosomal recessive trait? x

4. How to Read a Pedigree I II III
Females are circles - regular numbers are the individuals
Males are squares - roman numerals are the generations
- Those shaded are affected by the disease I II
III

6. It can get VERY complicated!

9. Making your own family pedigree

10. Mrs. Sharp’s Pedigree Chart