Answer :

A Pre-mRNA isn't always a mechanism of gene regulation that may take place after transcription is finished in eukaryotes.

Gene expression in eukaryotic cells is regulated via repressors as well as by transcriptional activators. Like their prokaryotic opposite numbers, eukaryotic repressors bind to unique DNA sequences and inhibit transcription.

In particular, gene expression is managed in two ranges. First, transcription is controlled by proscribing the amount of mRNA that is comprised of a selected gene.

Learn more about eukaryotes here

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