Question

What does a completely filled circle represent on a pedigree chart?

Answer 1

In a pedigree chart, a completely filled circle represents an individual who is affected by the trait or condition being studied, typically a genetic disorder. In contrast, an open circle would indicate an unaffected female. Similarly, a filled square represents an affected male, while an open square signifies an unaffected male. Pedigree charts are used to track the inheritance of traits through generations, making it easier to visualize patterns of inheritance.