To accomplish this, sister chromatids must segregate together during the first meiotic division , which requires that sister chromatid cohesion persists at centromeres.

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The events of cell cycle take place in the order of timing and space, which ensures that cell division and chromo...

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Meiotic pachytene bivalents were obtained from porcine testes using prolonged hypotonic treatment combined with high chloroform Carnory's fixative solution. Mitotic metaphase chromosomes were prepared from blood cell culture. Comparative studies on division index and length of pachytene bivalents and mitosis metaphase chromosomes showed that those of the former are 5 times higher and 3.42(1.87～5.98) times longer than the latter, respectively. Chromomere maps of bivalents are more abundant than mitotic metaphase G-bands, while they are correspondent with mitotic early-metaphase G-bands. The result was found by using the chromosome 12 as a sample.

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Meiosis is the cell division to form gametes that have half the chromosome number of the parent cell.

減數分裂是一種形成只有半數染色體數目的配子的細胞分裂。

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In this paper, a series of lunar map projection formulas are deduced including azimuthal projections, cylindrical projections and conical projections. The lunar map projections software is compiled. By caculating lunar map projection distortions, their projection distortion rules are found. Base on the lunar exploration mission, the lunar map projection scheme is given in this paper. The azimuthal conformal projection or the circumcenter perspective azimuthal projection is usually used in small areas, especially in two poles. When the whole map of the moon is needed, the azimuthal conformal projection or the circumcenter perspective azimuthal projection is used within 10° in the poles, and the traverse tangent cylindrical conformal projection or the normal secant conical conformal projection can be used in else areas, furthermore, band-division is necessary to reduce the projection distortion.

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To realize and maintain civil political liberty, so far as its relatinoship with political system is concerned, power division should be put into practice.

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"Varaha's uMobility 'Mobile Desk, Global Reach' solution cuts communication costs while giving Strata CIX enterprise and SMB users a new level of mobility and Unified Communications from their telephone systems," said Brian Metherell, vice president and general manager for Toshiba Information Systems, Telecommunication Systems Division.

東芝通信系統事業(yè)部信息系統總經理兼副總裁Brian Metherell 說："Varaha的uMobility "移動辦公欧美爱性真人在线视，全球可及方案幫助削減通訊成本，同時將Strata CIX企業(yè)和中小企業(yè)用戶的移動能力和電話系統的統一通信能力提升至新的高度人人摸人人人草。

IRVINE, Calif.— Toshiba America Information Systems Inc., Telecommunication Systems Division announced the availability of uMobility, a Fixed Mobile Convergence solution that expands the Unified Communications capabilities for enterprise users of Strata CIX VoIP business communication systems.

東芝美國資訊系統公司旗下通信系統事業(yè)部近日在位于加利福尼亞的Irivne發(fā)布了即將上市的搭載固定與移動融合解決方案uMobility產品一本大道AV久在线播放，該方案將為企業(yè)用戶部署Strata CIX VoIP企業(yè)通訊系統時進一步擴展其統一通信能力。

Since then, the division of labor is always an important topic in classical economics.

其后蝌蚪窝色久，分工理論一直是古典經濟學中一個重要課題亚洲第5页。