A diagram of pedigree chart for white forelock trait. The symbols used in the chart are:

1. Squares represent males and circles represent females.
2. A shaded circle or square indicates that a person expresses the trait.
3. A circle or square that is not shaded indicates that a person does not express the trait.
4. A vertical line and a bracket connect the parents to their children.
5. A horizontal line connecting a male and a female represents a marriage.

This diagram has an illustration of a middle-aged man in the right side.