TEMPLATE

Autosomal Recessive Pedigree

In autosomal recessive inheritance, two copies of the changed allele are needed for the trait to appear. Parents are often unaffected carriers, so the trait can skip generations and appear in both sexes. Carrier status is shown with a pattern segment (modern notation) or a center dot (classroom/legacy notation). This fictional example demonstrates the pattern; real inheritance can be more complex.

Three-Generation Pedigree

Grandparents, parents, and children with a proband.

Autosomal Dominant Pedigree

Trait appears in every generation; one affected parent usually has affected children.

X-Linked Recessive Pedigree

Mostly affected males; carrier mothers pass the trait to sons.

Autosomal Recessive Pedigree

Related templates

Three-Generation Pedigree

Autosomal Dominant Pedigree

X-Linked Recessive Pedigree