Gene expression is linked to RNA transcription, which cannot happen without RNA polymerase. However, this is where the similarities between prokaryote and eukaryote expression end. Central to the ...

Three different types of RNA polymerase exist in eukaryotic cells, whereas bacteria have only one. In eukaryotes, RNA pol I transcribes the genes that encode most of the ribosomal RNAs (rRNAs ...

which are recognized by the sigma factor subunit of RNA polymerase. In eukaryotes, promoter regions are more complex and often include a TATA box, a CAAT box, and GC-rich sequences. Eukaryotic ...