| 1. | During breeding for vertical resistance, horizontal resistance tends to decline because of negative selection pressure .
当培育垂直抗性时，由于负的选择压力，水平抗性趋于下降。 |
| 2. | Evolutionary selection pressure has probably entrenched the behavior in social animals such as ourselves
其原因大概是由于进化中的适者生存的压力固化了像我们这样的社会性动物的行为。 |
| 3. | In igaa a simulated annealing algorithm is used to alleviate the selection pressure of the genetic algorithm , and enhance the global convergence of igaa
在改进的遗传算法中利用模拟退火的方法可以缓解遗传算法的选择压力，增强了遗传算法的全局收敛性，避免了在搜索过程中陷入局部最优。 |
| 4. | Another thing : the most developed species , like humans and apes , are products of a very specific combination of selection pressures and genetic mutations over millions of years
约翰逊：还有，最先进的物种，比如人类和类人猿，是数百万年前物竞天择的压力和基因突变两者结合作用下的产物。 |
| 5. | J : another thing : the most developed species , like humans and apes , are products of a very specific combination of selection pressures and genetic mutations over millions of years
约翰逊：还有，最先进的物种，比如人类和类人猿，是数百万年前物竞天择的压力和基因突变两者结合作用下的产物。 |
| 6. | The frequency of invasive fungal infections has risen dramatically in recent years , increasing antifungal selection pressure and the emergence of antifungal resistance
摘要近年来，真菌感染，尤其是酵母样真菌感染的发病率和严重程度呈逐年上升趋势，且随著耐药菌株的不断出现，可选择的抗菌药物受到限制。 |
| 7. | In corn ' s wild relative , teosinte , these alleles occur in only 7 to 36 percent of plants , indicating that the selection pressure applied by early farmers to favor those alleles was rapid and thorough
而在玉米的野生亲戚大刍草里，这些对偶基因的出现率只有7 ~ 36 % ，显示出早期农民对偏好的对偶基因，施予的选择压力很彻底而且快速。 |
| 8. | Once consigned to the genomic junk pile , however , pseudogenes are released from this selection pressure and are free to accumulate all kinds of mutations , including changes that would be deleterious to normal genes
然而一旦划分到基因组垃圾堆后，伪基因就不再受天择的压力，各式各样的突变都会累积下来，包括那些会损害正常基因的改变。 |
| 9. | The author discussed the determination of selection pressure , measured the growth of calli and analyzed the influences of regeneration media on the regeneration of resistant calli in order to get some parameters to enhance the indica rice transformation frequency of particle bombardment
从籼稻基因枪转化过程中选择压的确定、愈伤组织的生长规律以及不同分化培养基对抗性愈伤出苗率的影响上，探讨了可能提高籼稻基因枪转化频率的参数。 |
| 10. | This dissertation studied biochemical characters of enzymes associated to op resistance in field populations of locusta migratoria manilensis ( meyen ) from huanghua - hebei , pingshan - hebei , beidagang - tianjin and wudi - shandong , where the insecticide selection pressures are considered different
本文选取我国东亚飞蝗河北黄骅、河北平山、天津北大港和山东无棣四个杀虫剂选择压力不同的东亚飞蝗自然种群进行有机磷抗性相关酶的生化特性研究。 |
