National Cancer Institute

      Standard Pedigree Nomenclature
Male, female, sex unspecified symbols Male, female, sex unspecified Pregnancy loss symbol Pregnancy loss
Proband symbols Proband (consultand) Affected with trait symbols Affected with trait
Deceased symbols Deceased Adopted symbol Adopted
Marriage line symbol Marriage line Dizygotic twins symbol Dizygotic twins
Line of descent and sibship lines shown.
Line of descent		 Monozygotic twins symbol
Monozygotic twins

Sibship line
No offspring symbol
No offspring