While looking at a three-generation family pedigree, the nurse notes that the da

Correct Answer: 4
Rationale 1: A circle is the standard symbol for a female, and darkening the circle represents a female affected by a disease. A male is represented by a square.
Rationale 2: A circle is the standard symbol for a female, and darkening the circle represents a female affected by a disease. A male is represented by a square.
Rationale 3: A circle is the standard symbol for a female, and darkening the circle represents a female affected by a disease. A male is represented by a square.
Rationale 4: A circle is the standard symbol for a female, and darkening the circle represents a female affected by a disease. A male is represented by a square.