2nd October 2019

medicinenet
12

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.

In this way, 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.

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.
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