Genes are amplified in the oocytes of many animals and in vascular plants. Many polymerase can transcribe DNA simultaneously. As the transcription goes along the DNA and RNA, strands become longer as the DNA coding for RNA is read. C. Selective Gene Transcription . In Prokaryotes a.
Prokaryotes contain only one type of RNA polymerase.
In eukaryotes, genes consist of a promoter to which specific transcription factors and an RNA polymerase must bind before transcription can occur. Trans-acting elements 1. Each transcription factor attaches to a specific sequence of the DNA . Once the transcription factors have attached, RNA polymerase binds and begins transcription. Enhancers are a part of the DNA sequence that function to bind transcription factors and stimulate promoters.