Answer :
In both eukaryotes and prokaryotes, gene expression is primarily regulated at the level of transcription.
The true choice is A
The process of gene expression that occurs in the cell nucleus, both eukaryotic and prokaryotic cells, has 2 stages, namely:
- Transcription process. At this stage doubling of one DNA of the coding strands (coding strand/positive strand) is carried out, by complementing the other strand as a template (template strand/negative strand). The result of this process is an RNA called heteronuclear RNA (hnRNA).
- RNA processing. At this stage, the hnRNA undergoes several stages, so that it is protected at both ends and the parts that will not be translated into amino acids (introns) so that RNA is obtained which is ready to be translated into a chain of amino acids, so this RNA is called messenger RNA (mRNA).
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