Klinefelter Syndrome For my human genetics research paper, I have selected Klinefelter Syndrome, or XXY Syndrome to further investigate. At first, I was stuck on what I should choose, but while searching the web for possible diseases or genetic traits, I came across a lot of useful information and many sites involving Klinefelter Syndrome. There were other diseases that I found that had a lot of information, but they tended to be better known diseases, such as Sickle Cell Anemia and Down Syndrome. I wanted to investigate a disease that I did not know much about, and since I have never heard of Kl