Question

4. mention the cause, chromosomal complement and diagnostic features of klienifelter syndrome.

Answer 1

One pair, called the sex chromosomes, determine whether you're 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)

in these individuals, the condition is described as mosaic Klinefelter syndrome (46,XY/47,XXY). Boys and men with mosaic Klinefelter syndrome may have milder signs and symptoms than those with the extra X chromosome in all of their cells, depending on what proportion of cells have the additional chromosome