单词 | idiochromosome |
释义 | > as lemmasidiochromosome idiochromosome n. Brit. /ˌɪdɪə(ʊ)ˈkrəʊməsəʊm/ , U.S. /ˌɪdiəˈkroʊməˌsoʊm/ , /ˌɪdioʊˈkroʊməˌsoʊm/ Genetics (now disused) (E. B. Wilson's term for) a sex chromosome, present in only one of the sexes (the heterogametic sex), which pairs with another of a different size during cell division; (in wider sense) a sex chromosome.ΘΚΠ the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > types of chromosome chromoplastid1885 accessory chromosome1899 chromoplast1902 X1902 heterochromosome1904 idiochromosome1905 macrochromosome1905 allosome1906 autosome1906 monosome1906 sex chromosome1906 supernumerary1907 X chromosome1911 Y chromosome1911 univalent1912 euchromosome1914 W1917 monosome1921 tetrasome1921 trisome1921 heterosome1938 isochromosome1939 trisomic1939 metacentric1945 acrocentric1949 polycentric1953 Philadelphia chromosome1961 monocentric1979 1905 Science 30 June 992/2 These corresponding but unequal chromosomes..may be called the ‘idiochromosomes’. They always remain separate in the first division. 1920 L. Doncaster Introd. Study Cytol. xi. 159 Most frequently the idio-chromosomes lag behind the autosomes in the spermatocyte anaphases, and the presence of such a lagging pair has sometimes been the first observed indication of the existence of a pair of idio-chromosomes. < as lemmas |
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