- 更多网络例句与同源联会相关的网络例句 [注:此内容来源于网络,仅供参考]
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There were detestably close synapses between homologous chromosomes during thellateprophase and early metaphase in mitosis of somatic cells.
发现在其有丝分裂的晚前期、中期阶段,咯对同源染色体都在进行联会。
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Thress homologous chromosomes of trisomics associated as a trivalent or a bivalent and a univalent or three univalent during diakinesis and metaphase 1 ;Laggard chromosome and univalent separated in advance at anaphase I ,leading to distribution of 10-1-10,9-12,11-11,10-2-10,10-12,10-10,9-1-11 besides 10-ll;And there was distribution of 11-11-10-10, 10-10-10-12, 10-10-10-11, 10-11-11-11, 11-11-10-9, 10-10-10-10, 9-12-10-10, 9-9-11-11, 11-10-10-9, 12-10-9-11, 11-9-9-13, 10-10-10-9 at anaphase II ;n l microspore frequency were different of four trisomics.
三体在终变期和中期Ⅰ,3个同源染色体联会成三价体,或2个联会成二价体和1个单价体,或3个都为单价体;后期Ⅰ出现落后染色体或单价体提前分离,导致除10-11式分离外,还有10-1-10,9-12,11-11,10-2-10,10-12,10-10,9-1-11等不均衡分离方式;后期Ⅱ有11-11-10-10,10-10-10-12,10-10-10-11,10-11-11-11,11-11-10-9,10-10-10-10,9-12-10-10,9-9-11-11,11-10-10-9,12-10-9-11,11-9-9-13,10-10-10-9等分离方式;4个三体中的n 1小孢子频率不同。
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This study provides genetic evidence that SUN1-telomere interaction is essential for telomere dynamic movement and is required for efficient homologous chromosome pairing/synapsis during mammalian gametogenesis.
我们的研究首次从遗传学上证明了SUN1蛋白和端粒的相互作用对于端粒在动物生殖细胞减数分裂中的动态变化,高效的同源染色体配对、联会以及哺乳动物的配子发生是必不可少的。
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They are often morphologically distinct from A chromosomes, being smallerand more highly heterochromatic in most cases. B chromosomes do not pair with Achromosomes, and they are inherited in a non-Mendelian way, exhibiting meiotic andmitotic instability and nondisjunction. However, B chromosome DNA is quiteidentical to the corresponding sequence on the A chromosome complement. So far afew B chromosome specific DNA sequence have been identified. Specific DNAsequences on B chromosome have been the attractive research area on Bchromosomes.
现已在千余种植物和近三百种动物中被发现。B染色体与物种中正常染色体不同:独立于整倍体基因组之外,减数分裂时不与A染色体发生联会和配对,细胞分裂后期不分离,非孟德尔遗传,富含异染色质,不含对宿主主要性状有影响的基因等。B染色体DNA的分子组成既与A染色体极为相似,具有A染色体DNA分子组成的一般特征:富含重复序列和转座成分,染色体三大功能组件DNA高度同源;又与之相区别,含有B染色体特异的DNA序列,这些DNA序列可以为探讨B染色体的起源和进化提供有价值的信息。
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Pairing of homologous chromosomes commences at one or several points on the chromosome and is clearly seen during PACHYTENE of meiosis I.
同源染色体两两成对平行靠拢,这一现象也称联会,联会发生在染色体的一点或多点上,可以在减数第一次分裂的粗线期观察到。
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In this article, the specific genes of meiosis and pathways are described in these events in Saccharomyces cerevisiae.
本文简述了现已阐明的酿酒酵母减数分裂的重要事件如同源染色体配对、联会、基因重组、染色体分裂和特异性基因。
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A structure formed during homologous recombination after synapsis.
联会之后的同源重组过程中形成的结构。
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However, the protein factors mediating meiotic telomeres attachment to the nuclear envelope and the requirement of this attachment for homologues pairing and synapsis have not been determined in animals.
然而,在动物中至今未能找到介导端粒和核膜附着的蛋白因子,端粒的核膜附着对于动物同源染色体的配对和联会的重要性亦未得到证实。
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YR-cohesion chromosome model will give a better answer to the questions such as exchange,centromere,holocentromere,synaptonemal complex,polytene chromosome,puff,lampbrush chromosome,chromosome banding,non-segregation of sister chromatid,pollentube pathway and biological evolution.
YR-染色体模型能自然、合理地解释所有遗传现象,如交换、着丝粒、全身着丝粒或弥散型着丝粒染色体、同源染色体联会及联会复合体的中央区、多线染色体与膨突、灯刷染色体、染色体分带、姊妹染色体由前期到中期不分开、花粉管会导入外源遗传物质、高等生命是怎样从原始生物进化而来的等等。
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The failure of homologous chromosomes to pair during meiosis.
不联会在减数分裂期间同源染色体不联会成对。
- 更多网络解释与同源联会相关的网络解释 [注:此内容来源于网络,仅供参考]
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central element:中央成分
联会复合体:是同源染色体联会过程中形成的非永久性的复合结构,主要成分是碱性蛋白及酸性蛋白,由中央成分(central element)向两侧伸出横丝,使同源染色体固定在一起.
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centric fusion:着丝粒融合
罗氏易位通常又称为着丝粒融合(centric fusion). 在减数分裂时,由于由两条短臂构成的小染色体丢失,故在联会时只有三条染色体参与,形成三价体(trivalent)(图2-12). 三价体的分离方式有三种,即交替式(同源着比粒各走向一极,
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homologous chromosome:同源染色体
同源染色体(homologous chromosome)是指分别来自父母双方,大小、形态结构基本相同,代谢和遗传功能相似,来源一般都相同的,在减数分裂中联会配对的两条染色体.
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non-hygromorphic hygrophyte:非湿生形态的湿生植物
异源染色体联会;异源配对;异型联会 non-homologous synapsis; non-homologous pairing | 非湿生形态的湿生植物 non-hygromorphic hygrophyte | 非同源对偶基因 non-identical alleles
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autosyndetic pairing:同源配对
autosynapsis同源联会 | autosyndetic pairing同源配对 | autoteraploid同源四倍体
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synapsis:联会
偶线期(zygotene stage)时染色质进一步凝集,同源染色体(homologous chromosomes)发生配对,称为联会(synapsis),所以此期又称配对期(pairing stage). 配对从同源染色体上的若干接触点开始,进而像拉链一样迅速扩展到整个染色体所有的同源片段.
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autostyly:自接型
autospore 似亲孢子 | autostyly 自接型 | autosynapsis 同源联会,同亲联会
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autosyndesis:同源联会
autosuggestionself-suggestion 自我暗示 | autosyndesis 同源联会 | autosyndesis 同源联会
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autosyndesis:同源联会,同亲联会
autosynapsis 同源联会,同亲联会 | autosyndesis 同源联会,同亲联会 | autotetraploid 同源四倍体
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recombination nodules:(重组节):联会复合体上出现的稠密物质,涉及染色体交换
Recombinant joint (重组接点):两个重组双链DNA 分子连接的... | Recombination nodules (重组节):联会复合体上出现的稠密物质,涉及染色体交换. | Recombination-repair (重组修复):通过从另一双链中获得同源单链来修...