Pedigree Charts

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

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

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

It can get VERY complicated!

Making your own family pedigree

Mrs. Sharp’s Pedigree Chart