Pedigree-family tree that shows the inheritance of a trait Use shapes to represent affected and unaffected individuals.

What inheritance patterns can be shown on a pedigree? Autosomal Dominant Males and Females affected Homozygous dominant (AA) or heterozygous individuals (Aa) Autosomal Recessive Homozygous recessive individuals (aa) X Linked Recessive Males and Females affected but only females can be carriers Females must have two recessive alleles, males only need one (XrXr or XrY)

Types of inheritance *cheat sheet* Y-linked: All males have the trait. Autosomal Dominant: No carriers X-linked recessive: No MALE carriers/only female carriers Autosomal Recessive: Try some…….

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