Removal of introns and joining the exons in a defined order in a transcription unit is called
AIPMT 2009,AIPMT 2012, Medium
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d
(d) : $mRNA$ is not made directly in a eukaryotic cell. It is transcribed as heterogeneous nuclear $RNA\ (hnRNA)$ in the nucleus. $hnRNA$ contains introns and exons. The introns are removed by $RNA$ splicing leaving behind the exons,which contain the information. The exonic regions of $RNA$ are joined together to produce a single chain $RNA$ required for functioning as translational template.
(d) : $mRNA$ is not made directly in a eukaryotic cell. It is transcribed as heterogeneous nuclear $RNA\ (hnRNA)$ in the nucleus. $hnRNA$ contains introns and exons. The introns are removed by $RNA$ splicing leaving behind the exons,which contain the information. The exonic regions of $RNA$ are joined together to produce a single chain $RNA$ required for functioning as translational template.
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