Klinefelter's syndrome is a genetic condition that only affects males. Affected males have an extra X chromosome. Males with Klinefelter's syndrome have small testicles (testes) which do not produce enough of the male hormone testosterone before birth and during puberty.
Also know, why does Klinefelter syndrome only occur in males?
Klinefelter syndrome occurs as a result of a random error that causes a male to be born with an extra sex chromosome. Males have an X and a Y sex chromosome (XY). Klinefelter syndrome can be caused by: One extra copy of the X chromosome in each cell (XXY), the most common cause.
Are Klinefelter male or female?
Usually, females have two X chromosomes (XX). Males have an X and a Y (XY). But in rare cases, a male is born with an extra X chromosome (XXY). This is Klinefelter syndrome.
Can Klinefelter syndrome be inherited?
Klinefelter syndrome and its variants are not inherited; these chromosomal changes usually occur as random events during the formation of reproductive cells (eggs and sperm) in a parent. An error in cell division called nondisjunction results in a reproductive cell with an abnormal number of chromosomes.