Table of Contents
What is XXY chromosome syndrome?
Klinefelter syndrome (sometimes called Klinefelter’s, KS or XXY) is where boys and men are born with an extra X chromosome. Chromosomes are packages of genes found in every cell in the body. There are 2 types of chromosome, called the sex chromosomes, that determine the genetic sex of a baby.
Why is Klinefelter’s syndrome only in males?
Klinefelter syndrome only affects males. It happens because of a difference deep inside the body’s cells, in microscopic strings of DNA (what make up genes) called chromosomes. Chromosomes are tiny, but they play a huge role in who we are — including deciding our gender, how we look, and how we grow.
Is Klinefelter caused by mother or father?
Klinefelter syndrome is not caused by anything the parents did or did not do. The disorder is a random error in cell division that happens when a parent’s reproductive cells are being formed.
What is the gender of a person with XXY?
A person’s physical gender (whether they have male or female sex organs) is determined by the sex chromosomes: females have two X chromosomes, or XX; most males have one X chromosome and one Y chromosome, or XY. Males with Klinefelter syndrome are born with cells that have an extra X chromosome, or XXY.
Is Klinefelter’s considered intersex?
Other intersex conditions, including the last four conditions listed above—complete androgen insensitivity, Klinefelter syndrome, Turner syndrome, and vaginal agenesis—usually do not result in ambigu- ous genitals and may not be recognized at birth.
Is Klinefelter syndrome a girl?
Overview. Klinefelter syndrome is a genetic condition that results when a boy is born with an extra copy of the X chromosome. Klinefelter syndrome is a genetic condition affecting males, and it often isn’t diagnosed until adulthood.
Can a girl have Klinefelter’s syndrome?
Klinefelter syndrome affects males only; females cannot have it. Klinefelter syndrome results from a genetic abnormality in which males have an extra copy of the X chromosome.