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Q.

(i) DNA is a polymer of nucleotides 
(ii) In RNA, every nucleotide residue has an additional group present at the position of ribose 
(iii) The backbone of a polynucleotide chain is formed due to sugar and phosphates. 
(iv) A typical nucleosome contains 200 bp of DNA helix 
Select the correct statements.

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a

i, ii, iii & iv

b

i, ii & iii

c

ii, iii & iv 

d

i, iii & iv 

answer is C.

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Detailed Solution

(i) DNA is a polymer of nucleotides.
(ii) In RNA, every nucleotide residue has an additional group present at the position of ribose.
(iii) The backbone of a polynucleotide chain is formed due to sugar and phosphates. 
(iv) A typical nucleosome contains 200 bp of DNA helix.

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(i) DNA is a polymer of nucleotides (ii) In RNA, every nucleotide residue has an additional group present at the position of ribose (iii) The backbone of a polynucleotide chain is formed due to sugar and phosphates. (iv) A typical nucleosome contains 200 bp of DNA helix Select the correct statements.