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#Question id: 3855


In eukaryotes, which of the following modifications is made to a primary transcript prior to its transport out of the nucleus?

#SCPH06 I Botany
  1. poly(A) tails added to the 3' end 

  2. 7-methyl guanosine caps added to the 5' end

  3. exon sequences, when present, are spliced out 

  4. all of these


Answer:- Option(s): 4


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