Question

39. DNA contains nucleobases, sugar and phosphate Removal
of which among these from a DNA sample will not
significantly affect the length of the DNA?

(a) Nucleobases
(b) Sugar
(c) Phosphate
(d) None of these​

Answer 1

Answer:

The sugar and phosphate group form main backbone(and determine the length). But the neucleobases are laterally attatched to the backbone and act as the "rungs"(steps) of the ladder and therefore cannot determine the length.

Options A

The bond present between the sugar and phosphate group of DNA is

Answer 2

Answer:

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