| 1 | In certain bacteriophages, 5- methylol cytosines have substituted for the cytosine. In the late 40s, looks up Garv E. | |
| 2 | To make Z-DNA typically requires a stretch of alternating cytosine and guanine bases. | |
| 3 | The methyl groups are attached only to specific cytosine bases - one of the four building blocks of DNA. | |
| 4 | Currently, the most active area of research involves introducing one of the cytosine genes into the cancer cell. | |
| 5 | It or its corresponding nucleoside or nucleotide may be prepared from DNA by selective techniques of hydrolysis. |
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