What is Klinefelters Syndrome (XXY)
In: Biology
XXY is what it is. Instead of a guy having one X and one Y chromosome, they get 2 X and one Y. It’s rarely a debilitating condition. In some men, it can do things like causing them to grow breasts unless they take additional hormones to prevent it. Some guys don’t even know they have it until they go through a fertility test. Men with the syndrome are usually, but not always, sterile.
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