1. Klinefelter Syndrome
Teens may have less facial or body hair, be less muscular than other boys, or experience enlarged breast tissue (gynecomastia), and a small penis. ... Causes Klinefelter's Syndrome results from a random error that causes males to be born with an extra sex chromosome. Of the 46 human chromosomes, the two sex chromosomes determine gender. In females, both sex chromosomes are X (written XX), while males have one of each X and Y chromosomes (written XY). ... The additional sex chromosome results from error during formation of egg or sperm, with approximately a 50/50 ratio. ...
- Word Count: 791
- Approx Pages: 3
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- Grade Level: Undergraduate