What is absent in mature RNA? | vedclass

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(B) In eukaryotic cells,the primary transcript (pre-$mRNA$) contains both coding sequences called $Exons$ and non-coding sequences called $Introns$.Du

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Introns

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(B) In eukaryotic cells,the primary transcript (pre-$mRNA$) contains both coding sequences called $Exons$ and non-coding sequences called $Introns$.During the process of post-transcriptional modification,the $Introns$ are removed through a process known as splicing.The remaining $Exons$ are joined together in a defined order to form the mature $mRNA$.Therefore,$Introns$ are absent in mature $RNA$.

What is absent in mature $RNA$?

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