dna

• Normal, double-helix dna is spiral, like a loosely coiled spring .
  正常的双螺旋DNA是螺旋形的，像一根松松地卷曲的弹簧。
• Microbodies might possess their own dna and have some degree of autonomy .
  微体可能有其自身的DNA并有一定程度的自主性。
• Satellite dnas were first detected as distinct subfractions of the genome .
  最初检测的随体DNA被当成为基因组的不同亚组分。
• Messenger rna is templated along only one of the two strands of a dna molecule .
  DNA分子两条中只有一条作为信使RNA的模板。
• They act as at least a temporary block to dna synthesis in micro-organisms .
  它们在微生物中至少对DNA合成起暂时性阻止作用。
• Newly-synthesized dna strands from adjacent replicons are ligated together .
  来自邻近的复制子的新合成的DNA链又连结在一起。
• Dna cross-links are produced mainly upon irradiation of dry dna or bacterial spores .
  DNA交链主要由照射于DNA或细菌芽胞引起。
• Each nucleosome contains both dna and four of the five kinds of histones .
  每一个核体不仅含有DNA，而且含有五种组织蛋白中的四种。
• Most mammalian cells contain multiple species of dna dependent dna polymerases .
  大部分哺乳动物细胞均含有多种依赖DNA的DNA聚合酶。
• Ribose and deoxyribose are constituents of the nucleic acids rna and dna .
  核糖与脱氧核糖分别是核糖核酸与脱氧核酸（DNA）的结构成分。