Individuals with Klinefelter's Syndrome typically have what genetic composition?

Individuals with Klinefelter's Syndrome typically have a genetic composition of XXY. This condition arises from the presence of an extra X chromosome in males, resulting in a total of three sex chromosomes: one Y chromosome and two X chromosomes. This atypical number of sex chromosomes can lead to physical and developmental traits associated with Klinefelter's Syndrome, such as reduced testosterone levels, infertility, and certain physical characteristics like taller stature and broader hips. Understanding the genetic makeup is crucial since it directly impacts the health and development of individuals with this syndrome.