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Q.

Read the following statements.
i) Prokaryotic mRNA is capless and tailless whereas eukaryotic mRNA is with cap and tail.
ii) The precursor of prokaryotic mRNA is hnRNA.
iii) In eukaryotes, transcription occurs in the nucleus and translation in the cytoplasm.
How many of the above statements are correct?

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a

i only 

b

ii and iii only

c

i and iii only

d

i, ii, and iii

answer is A.

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Detailed Solution

In prokaryotes, the mRNA is directly formed from DNA and there is no need for any processing since eukaryotic mRNA lacks introns. In prokaryotes, transcription and translation are coupled. In eukaryotes, transcription and translation are separated by space and time.

 

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Read the following statements.i) Prokaryotic mRNA is capless and tailless whereas eukaryotic mRNA is with cap and tail.ii) The precursor of prokaryotic mRNA is hnRNA.iii) In eukaryotes, transcription occurs in the nucleus and translation in the cytoplasm.How many of the above statements are correct?