transcription

• step one of transcription is the initiation step where the RNA polymerase binds to the promoter region
• Transcription


  To copy DNA into RNA
• Transcript

  To copy something
• Transcription

  1. RNA polymerase attaches to a region of the DNA sequence and attaches nucleotides to form phosphodiester bonds

  2. mRNA strands are produced by copying the DNA sequence into complementary mRNA sequence
• RNA polymerase

  The role in transcription is to join nucleotides to form a strand
• Transcription only occurs in the nucleus
• transcription:

  • DNA double helix is unwound and split into two strands - breaking of hydrogen bonds
  • One strand will be the template strand 
  • RNA polymerase binds to the promoter region before the gene 
  • RNA polymerase moves along the template strand 
  • complementary base pairing of adjacent RNA nucleotides to template strand 
  • Hydrogen bonding of bases 
  • RNA polymerase catalyses the formation of phosphodiester bonds 
  • Synthesises the sugar phosphate backbone