11. Go to the Family Village website. Family Village is a clearinghouse for disease information. Click on library. Explore the diseases, and identify one that exhibits pleiotropy.
http://www.familyvillage.wisc.edu/index.htmlx

12. Browse the National Center for Biotechnology Information (NCBI) site, and list three sets of linked genes. Consult OMIM to describe the trait or disorder that each specifies.
http://www.ncbi.nlm.nih.gov

13. Use OMIM to identify a genetically heterogeneic condition, and explain why this description applies.