| 单词 | haplont |
| 释义 | haplont Biol.|ˈhæplɒnt|
[a. G. haplont, f. haplo- + Gr. ὤν, ὀντ- being: see onto-.]
A sexual organism that is haploid at all stages of its life other than the zygote, which is diploid; an organism at a stage, or during the stages, in its life cycle at which it is haploid. So haˈplontic a., characteristic of, or having the characteristics of, a haplont.
1920Bot. Abstr. V. 214 (heading) Biology and morphology of the male haplonts of some Oenotheras. 1925E. B. Wilson Cell (ed. 3) vi. 492 The spores..receive the haploid number of chromosomes and develop without fertilization into a haploid, gamete-producing ‘sexual’ generation, known as the haplont (in plants the gametophyte) which intervenes between meiosis and the gamete-formation. 1929Hereditas XIII. 311, I propose the terms haplontic and diplontic sterility. 1938Bot. Rev. IV. 135 It is more probable that the above-described diplohaplontic Ulvaceae and Cladophoraceae arose from a haplontic ancestor than from a primitive ancestral type with alternating unicellular haploid and diploid phases. 1951M. O. P. Iyengar in G. M. Smith Man. Phycol. iii. 59 Protosiphon is another member of the Siphonales which is a haplont and not a diplont like the majority of the Siphonales. 1964Priestley & Scott Introd. Bot. (ed. 4) xxxiii. 499 If this is confirmed the nuclei in the Vaucheria thallus would be haploid and the life-cycle haplontic with the zygote (and zygospore) the only cell representing the diploid stage. |
英语词典包含277258条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。
相关内容11：
相关热词搜索：haplont英英词典英英释义英语词汇意思用法释义英语
字词 绿菌科 释义 【医】 Chlorobacteriaceae 汉译英翻译词典收录405719条汉英翻译词条，基本......
单词 harden 释义 ▪ I. harden, v.|hd()n|[f. hard a. + -en5: cf. ON. harna, which is, howev......
字词 绿萤光杆菌 释义 【医】 Bacillus virescens 汉译英翻译词典收录405719条汉英翻译词条，......
字词 绿莲属 释义 【建】 Chlorogalum 汉译英翻译词典收录405719条汉英翻译词条，基本涵盖了全......
单词 haplotype 释义 haplotype, n.Brit. |hapl()tp|, U.S. |hpltap|[‹ haplo- comb. form + -t......
字词 绿花白千层油 释义 【化】 oil of niaouli 汉译英翻译词典收录405719条汉英翻译词条，基......