Question
Tabulate the various features of different forms of DNA.
| S. No | Feature | B-DNA | A-DNA | Z-DNA |
| 1 | Type of helix | Right-handed | Right-handed | Left-handed |
| 2 | Helical diameter (nm) | 2.37 | 2.55 | 1.84 |
| 3 | Rise per base pair (nm) | 0.34 | 0.29 | 0.37 |
| 4 | Distance per complete turn (pitch) (nm) | 3.4 | 3.2 | 4.5 |
| 5 | Number of base pairs per complete turn | 10 | 11 | 12 |
| 6 | Topology of major groove | Wide, deep | Narrow, deep | Flat |
| 7 | Topology of minor groove | Narrow, shallow | Broad, shallow | Narrow, deep |
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