how does the presence of introns is reminiscent of antiquity how the process of splicing represents the dominance of RNA -world??

The primary transcript consists  of introns and exons. "Presence of introns is reminiscent of antiquity" implies that introns were previously in past an important pieces of information used to form mRNA  but now are of no importance.

"Process of splicing represents the dominance of RNA world" implies that RNA is the one that decides whether to keep introns or not, DNA kept the both

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tough question ??
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Gud ansr, kaha se padhi ho?
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@anamika
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What are you looking for?