Chromosomes are packages of genes present in every cellular within the body. You can find 2 kinds of chromosome, called the intercourse chromosomes, that determine the genetic intercourse of the infant. They are called either X or Y.
Often, a lady child has 2 X chromosomes (XX) and a male has 1 X and 1 Y (XY). However in Klinefelter problem, a kid exists by having a extra content regarding the X chromosome (XXY).