6th September 2018

mayoclinic
10

What does it mean if you have 3 X chromosomes?

Triple X syndrome, also called trisomy X, is a genetic disorder that affects about 1 in 1,000 females. Females normally have two X chromosomes in all cells — one X chromosome from each parent. In triple X syndrome, a female has three X chromosomes.

Subsequently, one may also ask, what does it mean when you have an extra X chromosome?

Klinefelter syndrome, also known as the XXY condition, is a term used to describe males who have an extra X chromosome in most of their cells. XXY males can have normal sex lives, but they usually make little or no sperm and are infertile.

How does Triple X syndrome affect the body?

Sometimes only some of the body's cells contain the extra X chromosome, a form of triple X syndrome called mosaicism. Although it's a genetic disorder, triple X syndrome (which affects only women) is not usually inherited. In mosaicism, the error happens during cell division early in the fetus's development.

What happens in the body to cause Triple X syndrome?

Most cases of triple X syndrome are not inherited. The chromosomal change usually occurs as a random event during the formation of reproductive cells (eggs and sperm). An error in cell division called nondisjunction can result in reproductive cells with an abnormal number of chromosomes.
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