| 1. | That cannot escape discussion in a minihistory of dna . 这在DNA的研究史上是有口皆碑的。 |
| 2. | The dna of chromatin must replicate before cell division . 染色质DNA在细胞分裂之前必须复制。 |
| 3. | The sugar in all the nucleotides of dna is deoxyribose . 所有DNA的核苷酸中的糖均是脱氧核糖。 |
| 4. | Each segment of dna thus synthesized is called a replicon . 这样合成的每一片段DNA称为复制子。 |
| 5. | Recombinant dna is also an excellent example of this problem . 重组体DNA也是这类问题的一个极好的例子。 |
| 6. | Rate of reassociation of dna fragments is a second-order reaction . DNA片段再结合的速度是一个次级反应。 |
| 7. | Adenoviruses are the only enteric viruses that contain a dna core . 腺病毒是唯一含有DNA核心的肠道病毒。 |
| 8. | The dna of bacteria is replicated by a semiconservative mechanism . 细菌的DNA是通过一种半保守性机理复制的。 |
| 9. | Geminiviruses are the only other group of plant dna viruses known . 双联病毒是已知的唯一另一组植物DNA病毒。 |
| 10. | Like mrna, both trna and rrna are transcripts of chromosomal dna . TRNA及rRNA同mRNA一样,都是染色体DNA的转录产物。 |