| 单词 | chromomere |
| 释义 | chromomere Biol.|ˈkrəʊməmɪə(r)|
[a. G. (H. Fol a 1892, in Lehrb. d. Vergl. Mikrosk. Anat. (1896) ii. ii. 259), f. chromo- 2 + Gr. µέρος part.]
A name for the chromatin-granules which make up a chromosome. Hence chromomeric |-ˈmɛrɪk| a.
1896E. B. Wilson Cell vi. 221 The chromatin-thread consists of a series of granules (chromomeres) embedded in..the linin-substance. 1920W. E. Agar Cytol. 134 [The chromosomes in prophase] are often markedly moniliform, i.e. consisting of a row of bead-like swellings of chromatin, called chromomeres, joined to each other by a thinner linin thread. 1952M. J. D. White in G. H. Bourne Cytol. & Cell Physiol. (ed. 2) v. 214 Chromosomes..are clearly split into two chromatids and show a chromomeric structure. 1957M. Abercrombie et al. Dict. Biol. (ed. 3) 52 Chromomeres, darkly staining granules sometimes seen in a series along prophase chromosomes during meiosis. Ibid., Chromomeres in corresponding positions on homologous chromosomes pair during meiosis. 1965Peacocke & Drysdale Molecular Basis Heredity vii. 78 The chromosome is linearly differentiated into lightly and more darkly staining regions. These more darkly staining segments, known as chromomeres, represent at least four types of structure. Ibid., It is now widely agreed that chromomeres are tightly coiled regions of the chromosome and that in the intervening regions the chromosomal fibre is much less coiled. |
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