TEMPLATE
X-Linked Dominant Pedigree
X-linked dominant traits appear when a single copy of the changed allele is present on the X chromosome. Typical clues: affected females can be as common as affected males, and an affected male passes the trait to all of his daughters but none of his sons. This is a fictional, simplified illustration of the pattern.
Related templates
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.
Autosomal Recessive Pedigree
Unaffected carrier parents can have an affected child; the trait may skip generations.