If you have an extra chromosome what is that disorder called?

In: Down Syndrome

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I think you are referring to Down syndrome.

Just to add a little to the above answer, while Down Snydrome is the most common disorder associated with an extra nonsex chromosome it is not the only one. The other condintions that come from extra copies of an autosome (non-sex chromosome) that result in the most live births are: Edward's Syndrome from an extra copy of 18 and Patau syndrome which is caused by an extra 13.

As for sex chromosomes, an extra X chromosome results in Klinefelter's syndrome (XXY) in males and metafemale or XXX syndrome in women. Males with an extra Y are simply refered to as having XYY syndrome.

First answer by Kamuna. Last edit by Sarine Elle. Contributor trust: 0 [recommend contributor]. Question popularity: 1 [recommend question]

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Describe chromosome number disorder? How does the disorder of chromosome happen? What is a person called that has an extra chromosome? What is a chromosome called when there are two copies? What is it called when there is a presence of complete extra set of chromosome? What is the condition called when a male has an extra X chromosome resulting in an XXY arrangement?