优势基因

So, not only is SM1 protective, it has a clear evolutionary advantage over the wild type, at least in the cosseted conditions of the laboratory.

所以，SM1基因不仅有保护作用，而且还对野生型的蚊子产生了进化上的优势，至少在实验室温和的条件下如此。

It goes without saying that such system design with its own unique advantages subverts the theory and practice of traditional implementation with the spirit of positive innovation. Yet, the existence and development of any systems must rely on a certain amount of time, space, material and spiritual factors.

毋庸讳言，行刑社会化这一制度设计凭借其自身的独特优势颠覆了传统监禁刑的理论与实践，具备积极革新的基因，然而任何一项制度的存在和发展，都必须依托于一定的时间、空间及物质、精神等诸多层面。

"One of the greatest advantages is the ability of recombinant adenovirus vectors to reduce gene expression both in vitro and in vivo," he adds.

&其中一个最大的优势是有能力的重组腺病毒载体，以减少基因表达在体外和体内，&他补充说。

Then summarizing the seed burgeon, growing character and it's regulation, the main conclusions are as fallowing:1. The germination percentage differs from different male parents, female parents and combinations.

父本、母本及组合间在发芽率上表现极显著差异，某些亲本所配的组合，其发芽率具有明显的优势，说明种子活力在很大程度上是由基因型所决定。

Maize inbreds belonging to 3 maize heterotic groups including Reid, Tangsipingtou and compound germplasm were studied to determine the influence of genotypes, media and plant regulators on the embryo-derived calius induction and green plant regeneration. Immature embryos (1.0~2.0 mm) from selfed ears were harvested as explants. Callus could be induced from all the tested inbreds. However, plant regeneration was only obtained in 12 genotypes.

以Reid、唐四平头和其它种质等3个杂种优势类群共19份玉米自交系为试验材料，以玉米幼胚作为外植体，研究了基因型、培养基和激素对玉米幼胚愈伤组织的诱导及植株再生的影响，结果表明供试材料均能进行愈伤组织的诱导，但是仅有12个自交系能再生植株。N6和改良N6培养基有助于提高愈伤组织的质量及其生长速度。2，4-D在愈伤组织的诱导中起着关键性作用。

The gene probe has obvious advantages of stronger peculiarity, higher sensitivity compared with smear examination, mycrobacterial culture and pure PCR.

该基因探针特异性强、敏感性高，与目前涂片镜检、培养法、单纯PCR扩增相比均有明显优势，适用于临床检测，有推广价值。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。