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.

以性成熟公豬睪丸和外周血為材料，采用長低滲求在线毛片网址、高氯仿卡諾固定液固定和外周血細(xì)胞培養(yǎng)制備減數(shù)分裂粗線期二價(jià)體和有絲分裂中期染色體艹视频免费，通過對二價(jià)體和有絲分裂中期染色體分裂指數(shù)和長度的比較研究，發(fā)現(xiàn)二價(jià)體的分裂指數(shù)和長度分別是有絲分裂中期染色體的5倍和3.42倍(1.87～5.98)中日韩欧美黄色网；同時以12號染色體為例国产深夜福利嘿咻嘿咻视频，比較了二價(jià)體上的染色粒結(jié)構(gòu)帶與有絲分裂中期染色體G-帶，表明染色粒結(jié)構(gòu)帶比中期染色體G-帶帶紋豐富羞羞操电影视频，而與早中期G-帶帶紋吻合国产草草影院在线观看欧美。

The reduction of chromosomes in the hybrid and the high numbers of bivalents were possibly due to the chromosome of Crambe abyssinica eliminating and the genome of Brassica.

雜種PMC減數(shù)分裂中，平均配對構(gòu)型為0.06Ⅲ+11.26Ⅱ+3.80Ⅰ欧美三级片视频免费，二價(jià)體數(shù)目變化于8～13之間激情久久综合精品久久久久，以10Ⅱ、11Ⅱ在线视频黄色中文中文网、12Ⅱ的細(xì)胞出現(xiàn)頻率較高亚洲日韩高清AⅤ在线观看，分別為26.60%，23.91%和30.98%涩视AV，單價(jià)體數(shù)目變化于0～8個之間免费看黄的视频。

Diakinesis bivalents end of some of the homologous chromosomes together only at the end.

終變期末有些二價(jià)體的同源染色體只在末端連在一起。

There are nine bivalents in pollen mother cells at late diplotene or early diakinesis, and the homologous chromosomes essentially arrange on the equatorial plate at late metaphase Ⅰor early anaphase Ⅰ, then the two homologous chromosomes of each bivalent separate from each other and move to two opposite poles drawn by spindle fibers.

在減數(shù)分裂雙線期末或終變期初一级A黄毛片，可以觀察到9個二價(jià)體，在中期I末至后期I初午夜黄色精品视频在线播放，同源染色體基本排列在赤道板上国产尤物电影在线观看网站免费，然后在紡錘絲的牽引下二價(jià)體的兩條同源染色體分開，分別移向兩極韩国午夜理论片在线观看手机，每一極有9條染色體拍自拍亚洲手机黄色视频在线观看，從而確認(rèn)該屬植物的染色體基數(shù)為x=9。

Centromeres could be identified easily on the bivalents at diplotene, so it was convenient to analyse the karyotype.

結(jié)果表明欧美两性一区，日本沼蝦染色體數(shù)n=52日韩欧美国产一，2n=104，據(jù)雙線期二價(jià)體的相對長度、著絲點(diǎn)位置以及形態(tài)諸方面的特點(diǎn)分析了核型在线免费av网址，共分為A亚洲性爱黄色视频，B，C欧美性爱视频一级黄片，D4個染色體組一级做a免费看，核型組成是N=37M+4ST+11T；初級精母細(xì)胞減數(shù)分裂前期I可分為細(xì)線期/偶線期深夜免费在线观看网站、粗線期国产免费A、雙線期和終變期5個時期，雙線期的二價(jià)體存在彌散階段91绿帽人妻国内最大，核仁明顯日本WWWⅹⅹX，且雙線期二價(jià)體著絲點(diǎn)清晰，給核型分析帶來了方便先锋影音在线。

Meiosis of Nelumbo was normal 5 and chromosome pattern was 8 Ⅱ; and few abnormalities , such as precocious segregation of bivalents at metapha...

蓮屬兩個種之間不存在生殖隔離欧美一级一片在线观看，僅存在地理隔離，因此把美洲黃蓮作為蓮的一個亞種處理国产超碰人人做人人爱，也許較目前作為兩個獨(dú)立的種更為恰當(dāng)黄色视频中文免费看。

We have developed a technique of random-primed tritium labeled DNA extension on the pachytene bivalents of rice-field eels.

采用隨機(jī)引物，在黃鱔二價(jià)體上建立了氚標(biāo)記引物原位DNA合成技術(shù)18岁不能看的网址，并詳細(xì)探索了該技術(shù)的實(shí)驗(yàn)條件543ev国产在线。

The result showed that the plant of Maicao No. 9 was tall, with good fecundity, fully filled grain and vigorous growth. The chromosome number of the root cells was 2n=56, through the observation of pollen mother cells meiosis, there were a certain amount of univalents, ring bivalents and bar bivalents in PMCM. Different numbers of lagging chromosomes, chromosome bridges and micronucleus were found in anaphaseⅠ, anaphaseⅡ and tetraspore.

結(jié)果表明：麥草9號植株高大，結(jié)實(shí)性較好国产A片123区，籽粒飽滿一级牲交毛片，生長旺盛；根尖細(xì)胞染色體數(shù)目為2n=56国产黄色网站视频不收费的，對其進(jìn)行花粉母細(xì)胞減數(shù)分裂觀察亚洲爆乳教师av，中期Ⅰ具有一定數(shù)量的單價(jià)體、環(huán)狀二價(jià)體美欧男女乱婬视频、棒狀二價(jià)體欧美日韩一区二区三区妖精；后期Ⅰ、后期Ⅱ與四分體時期都出現(xiàn)不同數(shù)量的落后染色體91亚洲精品、染色體橋多人乱p欧美在线观看、微核等現(xiàn)象。

As there were 8.69 bivalents in average occurred to be desynaptic, moreover, the most number of the desynaptic bivalents reached 12 at post diakinsis.

從品種輪回422的群體中發(fā)現(xiàn)一不育單株亚洲毛毛片，經(jīng)細(xì)胞學(xué)觀察證明是發(fā)生了聯(lián)會消失突變亚洲肏屄视频，由于該植株的花粉母細(xì)胞在減數(shù)分裂終變期晚期平均有8.69個二價(jià)體發(fā)生了聯(lián)會消失，占二價(jià)體總數(shù)的72.4%一本大道香蕉中文在线网站，并且發(fā)生聯(lián)會消失的最多二價(jià)體數(shù)目為12免费黄色网99，根據(jù)聯(lián)會消失的最多二價(jià)體數(shù)目

In order to develop a new path for gene mapping of fish, the digoxigenin and tritium labeled in situ hybridization techniques combined with multiple banding analysis on the pachytene bivalents of M. albus were studied using the wheat ribosomal RNA genes, pig growth hormone gene and MaSoxl (M. albus SRY boxl) DNA segment as the probes. Moreover, the techniques of random primed in situ DNA synthesis were also developed on the bivalents of M.

以兩種異源基因和Ma Soxl為探針国产专区精品主播在线，采用地高辛或氟標(biāo)記的原位雜交技術(shù)，結(jié)合點(diǎn)漬法和DNA印漬法分析日韩在线你懂的中文字幕，率先在黃鱔減數(shù)分裂二價(jià)體上開展基因定位研究欧美日韩国产亚欧在线观看，并與多重帶帶型分析相結(jié)合，以期為構(gòu)建黃鱔染色體框架圖奠定初步基礎(chǔ)18黄男人女人色www，為迅速改變魚類基因定位研究的落后局面而開辟新的途徑在线观看xxxx。