Henan Xinxiang 453007 Abstract The karyotype and the number of Humulus scandens

采用傳統(tǒng)的核型分析技術(shù)，分析了葎草莖尖有絲分裂中期染色體的核型。

One of two sperm get into an archegonium and fused with egg. The nucleus of fertilized egg began to divide, and the walls were formed after the third division. The eggs without fertilization divided two times and then disappeared.

雄配子體產(chǎn)生的兩個(gè)精子中的一個(gè)進(jìn)入頸卵器與卵細(xì)胞結(jié)合形成受精卵，受精卵核到第3次分裂形成細(xì)胞壁，沒(méi)有受精的卵細(xì)胞還要進(jìn)行兩次有絲分裂后才消失亚洲精品91福利在线观看。

We also confirmed in this paper that it is injected somatic cells but not broken cytoplasm formed multi blastomere through mitosis in the reconstructed embryos.

在本實(shí)驗(yàn)中還通過(guò)用DNA染料（Hoechst-33342）對(duì)核移植體進(jìn)行染色的方法，對(duì)融合后成纖維細(xì)胞在核移植體內(nèi)不同時(shí)間的運(yùn)行及發(fā)育模式進(jìn)行了觀察欧美久久精品呦呦视频，確認(rèn)了是成纖維細(xì)胞經(jīng)有絲分裂形成多個(gè)卵裂球而不是由于細(xì)胞質(zhì)碎裂形成的兩個(gè)或多個(gè)碎塊国产影院在线网站。

Cell cycle is the cell through a series of orderly changes in the cells to achieve cell growth and proliferation process of cell cycle regulation and individual development, differentiation, growth, regeneration, aging and cancer cells is closely related to eukaryotic cell cycle mitosis two key processes, namely DNA replication and sister chromatid evenly assigned to the sub-cells.

細(xì)胞周期是指細(xì)胞通過(guò)一系列有序的細(xì)胞內(nèi)變化，實(shí)現(xiàn)細(xì)胞生長(zhǎng)和分裂增殖的過(guò)程細(xì)胞周期的調(diào)控與個(gè)體發(fā)育欧美日韩一区二区三区综合在线、分化天天干,天天插,天天操、生長(zhǎng)、再生,人人综合操、衰老以及細(xì)胞的癌變密切相關(guān)真核細(xì)胞有絲分裂周期有兩個(gè)關(guān)鍵的過(guò)程国产特精品精品精品A片黄色，即DNA的復(fù)制和姐妹染色體均衡地分配到子細(xì)胞中。

The erasion of the mark likely was crucial in the process of the genome epigenetic reprogramming.

總之亚洲一级毛片无码久久精品，TBP在有絲分裂中期染色體上的殘留可能是分化細(xì)胞特有的細(xì)胞記憶標(biāo)記a黄色视频永久在线观看；這一標(biāo)記在核質(zhì)重組胚的核重序過(guò)程中被去除。

The results of the karyotype analysis indicated that the heteromorphic sex chromosomes existed in mitotic prometaphase chromosomes of the early embryos. Zchromosorne was the longest among the total of 56 chromosomes, and usually had twoconstricts at the ...

經(jīng)對(duì)23個(gè)分散好欧美国产日韩水多、完整的分裂相的分析表明：家蠶早期胚胎有絲分裂早中期染色體中有異型性染色體存在最新偷拍视频，Z染色體是核型中最長(zhǎng)的，通常具有亞端和亞中部次縊痕欧美极品网站在线观看免费高清，W染色體很短2019亚洲αⅴ无码天堂，約相當(dāng)干Z染色體的1／3長(zhǎng)。

Whole protein patterns during early stage of gynogenesis were first studiedthrough 2D electrophoresis. 11 specific protein dots were found, among which3(A1 ～A3 )were suggested to be the kind of inverse function factors which suppressgenes activating megagamete division, 8 (Bl～B8)were suggested to be closelyrelated with megagamet division activation.

通過(guò)雙向電泳技術(shù)研究了黃瓜雌核發(fā)育早期的特異蛋白質(zhì)表達(dá)国产在线观看精品影院AV，并發(fā)現(xiàn)了11個(gè)特異多肽點(diǎn)国产原创同事在线视频，其中3個(gè)(Al～A3)可能是開(kāi)啟分裂基因表達(dá)的一類(lèi)反式作用因子，起抑制該基因表達(dá)作用国产a片一级毛片网站。8個(gè)(B1～B8)可能是啟動(dòng)雌配子分裂密切相關(guān)的基因表達(dá)產(chǎn)物。

Tic division of F1 hybrid was normal ,anucleate cells and cells with micronuclei which were produced by asymmetrical separation of chromosomes were observed at the second meiotic division.

結(jié)果表明欧美一级特黄AAAA片免费，雜種F1減數(shù)第一分裂基本正常wwww性，在減數(shù)第二分裂觀察到由于染色體不對(duì)稱分離產(chǎn)生的無(wú)染色質(zhì)和僅帶有微核的子細(xì)胞。

The proliferating cells were mainly distributed in the peri-chondrium and the peripheral zone of tracheal cartilage. The senescent chondrocytes were distributed in the central zone whereapoptotic morphological characteristics obviously appeared, such as pyknosis, karyorrhexis.

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Most sperm nuclei eventually developed into the male pronuclei, just like the normal sperms, except sperm nuclei in a few zygotes kept dense throughout the fertilization process. Dense chromosome body was seen at the nuclear area during the prophase of first mitosis, and in the middle of spindle at metaphase of first mitosis.

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