Genetic Disorders Worksheet Page 4

6. A pedigree chart is a tool for tracing a trait through generations !

of a family. It is used to predict is a person is a carrier of a particular disease.!

“How To Read a Pedigree Chart:”!

In a pedigree chart:!

“squares” represents (males?/ females?) !

“circles”

represent (males?/ females?)!

7. (Vertical lines? or Horizontal lines?) --connect children to their parents.!

8. (Solid? or Half-shaded?) squares and circles indicates a person is only a “carriers”

of the disorder.!

9. (Solid? or Half-shaded?) squares and circles indicates a person actually has the !

the disorder.!

(****Note: If the shape is “NOT SHADED AT ALL”, then the person does not!

have the disorder.)!

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