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Q.

Choose the incorrect statement.

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a

Split gene arrangements represent probably an ancient feature of genome

b

The presence of introns in the cistrons of eukaryotes is reminiscent of antiquity.

c

The process of splicing represents the dominance of RNA world.

d

The primary transcript formed by the activity of RNA polymerase II can directly be involved in translation.

answer is D.

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Detailed Solution

hnRNA, the primary transcript formed by the activity RNA polymerase is non-functional as it has introns along with exons. It become functional RNA or mRNA after splicing during which introns are removed and exons are ligated. It is also subjected to capping during transcription and tailing after transcription.

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