BACKBONE

Which of the following statements are related to the structure of double helical DNA ? I.The helix makes one complete spiral turn every 34 A. II. The diameter of the helix is 20 A III.The distance between adjacent nucleotide is 3.4 A. IV. Each strand of helix has a backbone made up of alternating ricbose sugar and phosphate . V. The two adjacent sugar molecules joined with phosphate by phosphodiester bond.

Each of the following items in this section consists of a sentence, parts of which have been jumbled. These parts have been labelled as P, Q, R and S. Given below each sentence are four sequences, namely (a), (b), (c) and (d). You are required to re-arrange the jumbled parts of the sentence and mark your response accordingly. ("for long and")/P ("the backbone of India")/Q ("will continue to be the same")/R ("agriculture has been")/S