There are many X mutations .... but those people still just have one X if male.
Kennedy's disease:
http://www.ninds.nih.gov/disorders/k...s/kennedys.htm
Klinefelter's differs in that the male has TWO X's and one Y.
It is a whole other issue. (and is not hereditary).
Kennedy's is a mutation, and would appear in your ancestry if you could find it.
Klinefelter's is an error of cellular division in the beginning embryo. The only way the two could occur together would be if the patient inherited the mutation on one of the X's from his mother to give Kennedy's on top of the Klinefelter's. That would be pretty rare, I think.
I think any doctor can order the test for Klinefelter's. My son told me about this last year when a guy he worked with went to the doctor because he was having trouble building muscle at the gym. He was working out alot and getting nada results. His doctor tested his testosterone which turned out low...leading to the DNA test for Klinefelter's.
If you go to the Klinefelter site it might have more details for you:
https://www.genome.gov/19519068
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Weezie looking at petunias 8.25.2017
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