p. Initiationi. Ribonucleotides arepolymerised according to the code
q. Elongationii. RNA polymerase binds to TATA box
r. Terminationiii. mRNA is bound by protective molecules
s. Cappingiv. RNA polymerase detaches from DNA
A
p-i, q-ii, r-iii, s-iv
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B
p-ii, q-iii, r-iv, s-i
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C
p-ii, q-i, r-iv, s-iii
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D
p-iv, q-iii, r-ii, s-i
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Solution
The correct option is Cp-ii, q-i, r-iv, s-iii Transcription takes place in three major steps- initiation, elongation and termination. Initiation involves binding of RNA polymerase to the TATA box. This is followed by addition or polymerisation of ribonucleotides according to the template. The last step is termination, during which RNA polymerase detaches from the parental DNA in order to end the transcription process. The newly formed mRNA then undergoes processing, which involves capping and tailing by protective molecules.