LIFE SCIENCE

Detailed explanation-1: -Klinefelter syndrome is a sex chromosome disorder in boys and men that results from the presence of an extra X chromosome in cells. People typically have 46 chromosomes in each cell, two of which are the sex chromosomes. Females have two X chromosomes (46, XX), and males have one X and one Y chromosome (46, XY).

Detailed explanation-2: -There are 2 types of chromosome, called the sex chromosomes, that determine the genetic sex of a baby. These are named either X or Y. Usually, a female baby has 2 X chromosomes (XX) and a male has 1 X and 1 Y (XY). But in Klinefelter syndrome, a boy is born with an extra copy of the X chromosome (XXY).

Detailed explanation-3: -Klinefelter syndrome (KS) is a genetic condition where there’s an extra X chromosome present in a male’s genetic code. Instead of having a total of 46 chromosomes, they have 47-with two copies of the X chromosome and one copy of the Y chromosome (47, XXY).

Detailed explanation-4: -Approximately 1 in 500-600 males is born with an extra X chromosome. The prevalence rate is 5-20 times higher in males who are mentally challenged than in the general male population. Approximately 250, 000 men in the United States have Klinefelter syndrome.