Family Nurse Practitioner Exam

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What is the symbol for a diseased male in a pedigree chart?

  1. An empty square

  2. An empty circle

  3. A filled-in square

  4. A filled-in circle

The correct answer is: A filled-in square

In a pedigree chart, the symbol for a diseased male is represented by a filled-in square. This fills the square to indicate that the male individual has the condition being studied, which is a standard convention in genetics and family history analysis. The filled-in squares visually differentiate affected males from unaffected ones, who are represented by empty squares. This differentiation allows for quick identification of affected individuals when analyzing inheritance patterns within family trees. Understanding these symbols is crucial for interpreting pedigree charts and for communicating information about genetic conditions.

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