1. Pedigrees By: Sara Rogers

2. About Pedigrees Pedigrees are charts that show the occurrence of a particular gene or phenotype in a family.

3. Symbols Unaffected male - Affected male - Unaffected female - Affected female - Marriage -

4. Symbols Offspring - Non-identical twins - Identical twins - Carrier -

5. Question 1 What is the symbol for a carrier?

6. Question 2 What is the symbol for identical twins?

7. Question 3 Pedigrees show the occurrence of a particular __________?

8. Question 4 What is the symbol for marriage?

9. Answers 1. 2. 3. Gene or phenotype 4.

10. Citations Google images http://en.wikipedia.org/wiki/Pedigree _chartp