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Question : Given figure represents the DNA double helixmodel as proposed by Waston and Crick (1953). Select the optionthat shown correct measurements of A, B and C.

Answer»

A-3.4nm,B-0.34 nm, C-2 nm
A-3.4nm, B-3.4nm,C-20nm
A-3.4Å,B-3.4Å, C-20Å
A-34 Å,B-3.4Å , C-2Å

SOLUTION :(a) : The DNA HELIX makes one complete spiral turn every 3.4 nm and has a diameter of 2 nm. The DISTANCE between adjacent stacks is `0.34`nm.


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