单词 | homoplast |
释义 | homoplastn. Biology. 1. An organ or part homoplastic with another (see homoplastic adj.); opposed to homogen n. 2. ΘΚΠ the world > life > biology > biological processes > genetic activity > heredity or hereditary descent > [noun] > part similar to that of a different animal analogue1817 homoplast1870 isomere1884 1870 E. R. Lankester in Ann. Nat. Hist. 6 39 Such details of agreement..we must set down to the fact that they are to a great degree homoplasts, similar forces or requirements operating on similar materials in the two stocks..having produced results in the way of structure which have a certain agreement. 2. An aggregate or fusion of plastids all of the same structure: opposed to alloplast. ΘΚΠ the world > life > biology > substance > cell > cell organelle or contents > [noun] > plastids or aggregate of homo-organ1883 homoplast1883 trophoplast1883 plastid1885 chloroplast1887 chromatophore1895 proplastid1922 plastidome1926 1883 P. Geddes in Encycl. Brit. XVI. 842/2 The idorgan..is..defined as a morphological unit consisting of two or more plastids, which does not possess the positive character of the person or stock. These are distinguished into homoplasts or homo-organs and alloplasts or alloeorgans. This entry has not yet been fully updated (first published 1899; most recently modified version published online June 2021). < n.1870 |
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