出典:Wiktionary
出典:『Wiktionary』 (2026/07/11 00:48 UTC 版)
Named by Hermann Henking in 1890 from x (signifying the unknown) due to some baffling properties he had observed. The brief resemblance in the appearance of the X and Y chromosomes to the letters "X" and "Y" respectively during cell division is entirely coincidental.
X chromosome (plural X chromosomes)
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a chromosome {related with sex-decision}
線.
X rays X
[the character] of a set of chromosomes
xを求める
the nucleus of a male gamete