遗传工程学

yíchuán gōngchéngxué 在遗传学(研究生物体遗传和变异规律的科学)基础上发展起来的一门新兴学科。主要指把一种生物的遗传物质(细胞核、染色体、脱氧核糖核酸等)转移到另一生物的细胞中去。其应用范围很广,可用来有计划地改进现存生物的遗传性状,为培育动植物和微生物新品种、控制遗传性疾病和癌症等提供了可能。

• 忠言逆耳
• 忠诚
• 忠谏
• 忠贞
• 忠贞不渝
• 忠贞不贰
• 忠邪
• 忠顺
• 忠骨
• 忠骸
• 忠魂
• 忠鲠
• 忡
• 忡忡
• 忣
• 忤
• 忤头忤脑
• 忤气
• 忤色
• 忤逆
• 忧
• 忧世
• 忧伤
• 忧劳
• 忧哀
• the stocks
• the Stone Age
• the-stone-of-scone
• the stone of scone
• the stones
• the-stones
• thestones
• the straight and narrow
• the strait of magellan
• the-strait-of-magellan
• the strand
• the-strand
• thestrand
• the strangers' gallery
• the-strangers'-gallery
• the strategic defense initiative
• the-strategic-defense-initiative
• the stratosphere
• the-straw-that-breaks-the-camel-back
• the straw that breaks the camel back
• the straw that breaks the camel's back
• the-straw-that-breaks-the-camels-back
• the-straw-that-breaks-the-camel's-back
• the straw that breaks the camels back
• the street