One of my best friends deals with this question all the time, at school, at doctors’ offices and even at adoption and foster care support groups. I guess it is rather surprising that more people don’t know about it considering the statistics I found.
“Based on these studies, the XXY chromosome arrangement appears to be one of the most common genetic abnormalities known, occurring as frequently as 1 in 500 to 1 in 1,000 male births. Although the syndrome's cause, an extra sex chromosome, is widespread, the... more
