Granulosus is further;2. In differentiation of closely relatedspecies, the changes in heterochromatin and pericentric inversions are key factors, this is wellnoted in the small chromosomes;3. A. mantzorum has well-differentiated XY type sex chromo-'.omes, the Y chromosome is mainly composed of euchromatin, but has strong C-band in themiddle of the long arm. It is suggested that the Y chromosome of A. mantzorum is in the-initial stage of sex chromosome differentiation.

結(jié)果表明：(1)四川湍蛙日日摸夜夜爽毛片免费视频、理縣湍蛙和棕點湍蛙之間的親緣關(guān)系較近，而它們與棘皮湍蛙的親緣關(guān)系較遠国产无码网站；2）在近緣種的分化中国产亚洲精品AA片在线，染色體結(jié)構(gòu)異染色質(zhì)的變化和臂間倒位是重要的因素之一，這在小型染色體上表現(xiàn)得尤為突出一级毛片免费毛片；四川湍蛙具有在形態(tài)上分化很明顯的性染色體99ritv。C帶分析表明，此性染色體主要由常染色質(zhì)構(gòu)成亚洲免费播放黄色网，但在其Y染色體的長臂上存在明顯的中間C帶亚洲精品永久无码在线主页，推測尚處于性染色體分化的初期階段。

Distorting of them by type, the rate of number aberration is 9.9%, the rate of the structure aberration is 2.3% and the abnormal rate of the chromosome polymorphism diversity is 3.5%. Distorting of them by chromosome, the rate of the euchromosome aberration is 11.7% and the rate of the sex chromosome aberration is 4.0%.

其中按畸變類型分類毛片网址在线，數(shù)目畸變率為9.9％亚洲国产精品片毛A片，結(jié)構(gòu)畸變率為2.3％，染色體多態(tài)性畸變率為3.5％一级A毛片美女精品大片；按染色體不同分類，常染色體畸變率為11.7％亚欧一级AV网站，性染色體畸變率為4.0％亚洲一区二区三区动图。

Nine embryos had sex chromosome mosaicism. XO in male and female embryos cells were 12% and 14% respectively. Conclusion Identification of sex by FISH analysis of a single cleavage cell is accurate, and sex chromosome mosaicism will not affect preimplantation gender diagnosis.

結(jié)果 有兩個細胞以上的14個正常受精胚胎中9個胚胎有不同程度的性染色體嵌合，其中男性胚胎41個細胞中XO有5個亚洲日本色图，占12%火辣辣福利视频；女性胚胎28個細胞中XO有4個，占14%美国成年性生活片视频在线观看。

Because man can only inherit genes carried on the sex chromosomes while woman have 2 sex chromosomes, even if one of sex chromosome has defect, there is another one can take place for.

這是因為男人只能繼承母親身上一個X染色體的基因av在线视屏。而女人有2個X染色體，即使一個辨色基因出現(xiàn)缺陷国产黄片视频在线播放，還有另一個基因可以頂替它的位置香蕉A片。

The number of the chromosomes in Henan large tail sheep is 2n=54, the karyotypes of male and female sheep are 54, XY and 54, XX, respectively. There are 26 pairs of autosomes and 1 pair of sex-chromosome. Among 26 pairs of autosomes, 3 pairs are metacentric chromosomes, 23 pairs are telocentric chromosomes. X chromosome is the biggest subtelocentric chromosome and Y chromosome is the smallest submetacentric chromosome.

河南大尾寒羊二倍體染色體數(shù)目為2n=54，公羊核型5491精品在线观，XY欧美中文字幕第一页；母羊核型54，XX.27對染色體中包括26對常染色體和1對性染色體特级一级黄片，常染色體中有3對為中著絲粒染色體好男人社区WWW资源，23對為端著絲粒染色體；性染色體中精品无码一级毛片，X染色體為最大的端著絲粒染色體少妇人妻无码专区免费视频，Y染色體為最小的中著絲粒染色體。

There are several characters in our researches:(1) we study the relationship between karyotype polymorphism and sex chromosome in Elaphodus Cephalophus which only lives in China, and explore the mechanism of its sex chromosome evolution.

研究特色主要體現(xiàn)在：一、以我國特有的動物毛冠鹿為材料午夜精品久久久久久三级，在染色體和DNA水平上研究毛冠鹿核型多態(tài)與性染色體關(guān)系在线你懂的网站国产日韩欧美，探索毛冠鹿性染色體發(fā)生和演變的機制。

These sequences possessed highly copy number in the genome and were named as RMX1-6 individually. When these sequences were hybridized to chromosomes of spiny eel, RMX6 was proved to be sex chromosome specific and it only located in heterochromatic regions.

在隨機挑取的三百多個克隆中污网站18，分離得到了6個高度重復(fù)序列一级性爱视频国产无码，它們在基因組中存在較高拷貝數(shù)，按照發(fā)現(xiàn)順序分別命名為RMX1—6(Repetitive sequence inMicrodissected X chromosome)一级特黄特色的免费大片视频。

Heterotypic sex chromosome was investigated on the metaphase chromosome of half-smooth tongue-sole and homotypic sex chromosome were investigated on the metaphase chromosome of half-smooth tongue-sole.

將GFP報告基因通過脂質(zhì)體介導(dǎo)的方法轉(zhuǎn)入SFEC和HTLC中并成功地獲得了表達免费黄片2019，轉(zhuǎn)化率為20%左右。

Suppression of recombination is the prerequisite for plant sex chromosome evolution from a pair of autosomes. Recombination suppression around the locus controlling sex determination results in sex chromosome degeneration and differentiation.

重組抑制是植物性染色體由常染色體進化而來的前提條件AV福利免费在线观看，性別決定位點區(qū)域發(fā)生的重組抑制使早期的性染色體發(fā)生了退化和分化91精品在线观看国产福利。

The results are as follow:The diploid chromosome number of Taihe Silkies was 2n=78,the basic number of chromosome arms was AF=90 and the sex chromosome type was ZZ/ZW.According to the measured relative length,arm ratio and centromeric index,the first 10 pairs of macro-chromosomes are described as follows:No.1 ,9 and Z,W chromosomes were metacentrics,No.2,4,7 were submetacentrics,and No.3,6,8,10 were telocentrics.Studies on Taihe Silkies′ G-band showed that the first 10 pairs of macro-chromosomes can be divided into 29 zones and 190 bands.

結(jié)果表明：泰和烏骨雞體細胞染色體數(shù)目2n=78，染色體基本臂數(shù)AF=90超碰超在线，1最新国产95自拍视频专区、9號染色體及Z、W性染色體為中央著絲粒染色體色五月婷婷丁香亚洲激情五月，2亚洲就干、4、7號染色體為亞中央著絲粒染色體欧美视频自拍日韩在线观看免费，3精品无码大片AV在线播放、6、8亚洲福利诱惑、10號染色體為端著絲粒染色體A黄色毛片。G帶研究表明：前10對大型染色體可分為29個區(qū)，190條帶免费真人一级毛片一区二区三。C帶處理發(fā)現(xiàn)免费毛片观看网站在线，所有母雞分裂相中W性染色體都出現(xiàn)C帶并整條深染。