Transcription

• 1. RNA polymerase attaches to the start codon of a gene
• 2. a section of DNA unwinds due to hydrogen bonds breaking between bases in middle of double helix
• 3. one DNA strand acts as a template strand
• 4. RNA polymerase lines up free RNA nucleotides to the template strand and joins them together
• 5. this forms mRNA
• 6. once RNA polymerase has passed the DNA strand winds back again
• 7. once RNA reaches end of codon it detaches from DNA
• 8. mRNA moves through nuclear pore and attaches to ribosome in cytoplasm ready for translation