WEEK 5 & 6: LAB BIOS390

WEEK 5: LAB: transcription in prokaryotes Transcription is the first step in gene expression. It involves copying a gene's DNA sequence to make an RNA molecule. Before transcription can take place, the DNA double helix must unwind near the gene that is getting transcribed. The region of opened-up DNA is called a transcription bubble. Transcription uses one of the two exposed DNA strands as a template; this strand is called the template strand. The RNA product is complementary to the template ...