Can females have extra chromosomes?

Question

http://en.wikipedia.org/wiki/XYY

If there are such a thing as XYY males, then is it possible for females to have extra chromosomes?

Answer 1

yes, when this happens it is called aneuploidy.

some examples of aneuploidy are:

    * Females with but a single X chromosome: the most common cause of Turner's syndrome. The phenotypic effects are mild because each cell has a single functioning X chromosome like those of XX females. Number of Barr bodies = zero.

    * x*x, XXXX, XXXXX karyotypes: all females with mild phenotypic effects because in each cell all the extra X chromosomes are inactivated. Number of Barr bodies = number of X chromosomes minus one.

    * Klinefelter's syndrome: people with XXY or XXXY karyotypes are males (because of their Y chromosome). But again, the phenotypic effects of the extra X chromosomes are mild because, just as in females, the extra Xs are inactivated and converted into Barr bodies.

Answer 2

YES

Answer 3

Yes.

Females with x*x are relatively normal and healthy.

Any extra autosomal chromosome results in severe problems.