1. POLYDACTYLY Kelly Lorenzi Per 3

2. How it is inherited  Inherited as an autosomal dominant trait  You can carry the allele for it and it will show in the phenotype  It is a mutated gene  Can occur on its own

3. Symptoms of Polydactyly  Extra fingers or toes  1 out of 500 births  Less than 200,000 a year are diagnosed in US  Most common in African Americans  Men and women have an equal chance of getting it

4. Average Lifespan  Normal lifespan  It can be cured  Removed by surgery  Or tying a string around the extra finger

5. How the family is affected  Not entirely affected  They may need to help them with mobility

6. What I learned  I learned that Polydactyly is more common than I thought  Also, how easily it can be treated

7. Sources  "Polydactyly - My Child Has." Children's Hospital Boston. Web. 25 Apr. 2011..  "Polydactyly (Extra Fingers)." E-Hand The Electronic Textbook of Hand Surgery. Web. 25 Apr. 2011..  "Polydactyly: MedlinePlus Medical Encyclopedia." National Library of Medicine - National Institutes of Health. Web. 25 Apr. 2011..