THE SEX OF A PERSON IS DETERMINED BY THEIR SEX CHROMOSOMES & PRIMARY SEX CHARACTERISTICS

The person has two XX sex chromosomes and one Y sex chromosome

One in 500 to 1,000 "male" newborns. Klineflelter's Syndrome is the most common type of Intersex.

The presence of the extra X chromosomes may affect a broad range of conditions including, but not limited to, social skills, behavioral issues, infertility, hormone production, low muscle tone, problems with coordination, speech delays, learning disabilities and limited problem solving skills (executive functioning), gynecomastia, osteoporosis, anxiety and depression" 

A person with Turner's Syndrome has two only one sex chromosome, an X

One in 2,000 female newborns

Having only an X chromosomes may affect a broad range of conditions including, but not limited to, a short stature, a short & wide neck, a broad chest and widely spaced nipples, arms that turn out slightly at the elbows, a low hairline, failure of teeth to develop normally, a large number of moles, small & spoon-shaped nails, a short 4th finger or toe, osteoporosis, scoliosis, under-active thyroid, impaired vision, congenital heart defect or narrowing of the aorta