sex chromosome: Quick Facts

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Oct. 18, 2026

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X chromosome Y chromosome Barr body superfemale Klinefelter syndrome androgen insensitivity syndrome Turner syndrome trisomy X XYY-trisomy Sex sexual differentiation karyotype Autosome Sexual dimorphism Sex hormone Unisexuality Bisexuality gene Why Are Chromosomes in Pairs?major histocompatibility complex

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Key People

Stevens, Nettie

Nettie Stevens

American biologist and geneticist

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Clarence E. McClung

American zoologist