杂交

Gene introgression is usually resulted from spontaneous hybridization occurring among closely related species in sympatric populations and thus has great impact on genetic structure of natural populations.

同域分布的近缘物种常常发生杂交而导致种间基因渐渗，从而对相关物种的自然居群遗传结构产生重要影响，近缘种间的杂交渐渗已成为进化生物学和保护生物学关注的热点。

In this present study, sterile hybrid progenies derived from optimal combinations guaranteed the protection of intellectual property. Meanwhile, inter and intra-specific hybridization using male sterility and molecular method for hybrid seed identification paved a new way for crossbreeding Tagetes erecta through male sterility.

本研究所选育出的优良组合子代全部是不育类型的杂种，有力地保护了自主知识产权，利用雄性不育进行种内和种间杂交以及分子鉴定杂交种的方法，开创了万寿菊利用雄性不育进行杂交育种的新途径。

Chromosome observation of the male sterile line and fertile line, parents of hybrid combination and F1 indicated that the chromosome number of the male sterile line is the same as that of fertile line 2n=2x=24; Pollen parent (Tagetes putula PHBO029) is tetraploid 2n=4x=48; the F1 is triploid 2n=3x=36 with hybrid vigor.

通过对不育系、正常可育系以及杂交组合父母本、子一代的染色体数目观察发现：万寿菊雄性不育系的染色体数目与正常可育系相同，均为2n=2x=24；孔雀草PHBO029为四倍体2n=4x=48，它与万寿菊不育系杂交、其杂种为具有杂种优势的三倍体2n=3x=36。

Results In the follicles of estrous cycle rat,the signals of MMP 2mRNA were detected in the granulosa cells and thecal cells;w...

结果 在动情周期中，各情期卵巢中卵泡的颗粒细胞和发育良好的卵泡的膜细胞中均可检测到MMP 2mRNA的杂交信号；MMP 9mRNA的表达始于已发育良好的窦前卵泡的膜细胞，此后在小窦状卵泡、窦状卵泡及排卵前卵泡的膜细胞中均检测到MMP 9mRNA的杂交信号。

Percentage of seedling in hexaploid Tritical X common wheat was more high because endosperm developed very well than that in common wheat X hexaploid Tritical because endosperm developed bad. Many seeds and good seedling were obtained by back-crossing.

2六倍体小黑麦×普通小麦与普通小麦×六倍体小黑麦两种杂交方式都有比较高的杂交结实率，但前者种子发育好，种子相对饱满，出苗率高，后者种子胚乳发育不良，出苗率低。

Observation were made on the fertilization and embryo development in wide hybridization between Triticum aestivum L.

本文还报道了小麦与节节麦远缘杂交时雌雄性核的结合及杂种胚和胚乳的发育情况，探讨了小麦与节节麦杂交结实率低在胚胎学方面的原

A represents the labeled fragments as position control; H1 represents the human H1gene as positive control; NEG represents the 431 bp fragment of bacterial 16s RNA as negative control; X,Y,Z,R,T,U represent the uncharacterized genes of SARS virus, which functions are unknown, the number under the parenthesis represents the position of each gene on the virus genome.

其中A表示利用已经标记好的片段作为坐标点；H1为人H1基因cDNA片段，作为芯片杂交的阳性点；NEG表示细菌16sRNA的一段长431bp片段作为芯片杂交的阴性点；X，Y，Z，R，T，U为推测的蛋白编码区，其功能还不清楚，括号内数字表示在基因组上的相对位置。

The therapeutic effect of HYJDT on glomerulosclerosis was observed by way of five aspects:(1) Effect on renal tissue morphology;(2) Effect on urine protein and blood creatinine and blood uria nitrogen ;(3) Effect on superoxide dismutase and malonydialdehyde in reual cortex;(4) Effect on matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-l (TIMP-1) in glomerulus;(5) Effect on MMP-9 mRNA and TIMP-lmRNA and type-1 plasminogen activator inhibitor (PAI-1) mRAN in glomerulus.

用药治疗12周取肾，HE、PAS染色，在光镜下观察肾组织形态学变化，并在透射电镜下观察肾小球超微结构的变化。用半自动生化分析仪检测肾皮质匀浆中SOD活力、MDA含量。用免疫组化技术检测肾小球中MMP-9、TIMP-1的蛋白表达，用原位杂交技术检测MMP-9mRNA、TIMP-lmRNA、PAI-lmRNA的基因表达。免疫组化和原位杂交结果，采用计算机图象分析系统测量各自的平均吸光度。所有的实验数据均用SAS6.12统计软件包进行统计学处理。

Also known as Grolar Bear, this bear hybrid is a rare ursid hybrid that has occurred both in captivity and in the wild. In 2006, the occurrence of this hybrid in nature was confirmed by testing the DNA of a strange-looking bear that had been shot on Banks Island in the Canadian arctic.

这种杂交熊也被称之为&灰白熊&，是一种罕见的混血熊科动物，在圈养和野生环境下都有存在。2006年，有人在加拿大北极地区的班克斯岛猎杀了一头外表怪异的熊，DNA检测结果证实自然界确实存在这种杂交熊。

In conclusion, silkworm vasa plays an important role in the determination of the germ line. What's more, the optimization of ISH has been tested.

此外，在进行原位杂交的研究中，我们探索和建立了家蚕胚胎原位杂交的方法，并对其中关键的影响因素进行了优化。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！