突变

• To map 100 mutants by this method would necessitate nearly 5, 000 crosses .
  用这种方法来绘制100个突变型的遗传图就要做5000个杂交。
• Both frameshift and missense mutations can be suppressed by intragenic suppressors .
  移码突变和异义突变都能被基因内抑制基因所抑制。
• They went on to isolate a series of revertants from several secondary mutants .
  它们进一步从几个第二次突变型中分离出一系列的回复子。
• Autotrophic mutants were prepared from six different stocks of a special group .
  自养突变体是从一个特别类群的6个不同的原种菌系制备的。
• So far the discussion has centered entirely around mutation in the strict sense .
  到目前为止，严格来讲，讨论完全集中于围绕突变问题上。
• An osmotic mutant of neurospora was permeable to polymers of molecular weight 18500 .
  脉孢壳属的渗透突变体能透过分子量为18500的聚合物。
• When the cells were then shifted to an enriched medium, the mutant cells proliferated .
  然后，当细胞移入一种滋养培养液时，突变型细胞增殖。
• These large populations facilitate the detection of rare mutational or recombinational events .
  这样的大群体有利于检出稀有的突变或重组子。
• Microvariations, or mutations, are considered to be slight changes of the historical record .
  微变异或突变可以认为是物种衍变历史记录中的一页。
• Inhibition of chlorophyll synthesis may be caused by etiolation, mutant blocks, or streptomycin .
  叶绿素合成可以由黄化、突变性阻塞或链霉素而引起。