What does 2 x Chromosome mean?

Question

We did Secret Santa a few weeks ago and my friend got that clue. It was a boy with ADHD that had her, in case that helps. Just like, what does it mean? I'm not sure if that was the right spelling..

Answer 1

Under normal circumstances, the clue would mean "girl" or "woman."

From the Encyclopedia Brittanica:
"sex chromosome
Either of a pair of chromosomes that determine whether an individual is male or female. The sex chromosomes of mammals are designated X and Y; in humans, they constitute one pair of the total 23 pairs of chromosomes. Individuals possessing two X chromosomes (XX) are female; those having one X and one Y chromosome (XY) are male. The X chromosome is larger and carries more genetic information than the Y. Traits controlled only by genes found on the X chromosome (e.g., hemophilia, red-green colour blindness) are said to be sex-linked. Sex-linked traits occur far more frequently in males than in females, since a male inheriting an allele for a recessive (see recessiveness) trait on the X chromosome lacks a corresponding allele on the Y chromosome that might counteract its effects. Several disorders are associated with an abnormal number of sex chromosomes, including Turner syndrome and Klinefelter syndrome."

Answer 2

Hye its not 2x its XX and XX male syndrome is a rare disorder, where the SRY region of the Y chromosome has recombined to be located on one of the X chromosomes. As a result, the XX combination after fertilization has the same effect as a XY combination, resulting in a male. However, the other genes of the X chromosome causes feminization as well.