Sex Chromosome Combinations

Does not include fatal combinations

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Last updated: January 3, 2023

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Hint	Answer
Male	XY
Female	XX
Klinefelter Syndrome	XXY
Trisomy X	XXX
Jacobs Syndrome	XYY
Tetrasomy	XXXY
Tetrasomy X	XXXX
Tetrasomy	XXYY
Pentasomy	XXXXY
Pentasomy X	XXXXX
Turner Syndrome	X0
Turner Syndrome Mosaicism	X0/XY
Klinefelter Syndrome Mosaicism	XY/XXY
Tetragametic Chimerism	XX/XY

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1 Comments

Level 41

May 11, 2025

I do believe you can get XYYY... but with each additional Y ur IQ goes down