DNA helicase breaks the hydrogen bonds between the bases in the two strands of DNA
what is the second stage of transcription?
The DNA double helix splits into two strands, each acts as an individual template. Free mRNA nucleotides will align opposite exposed complementary DNA bases.
what is the third stage of transcription?
The enzyme RNA polymerase joins together the adjacent RNA nucleotides, forming a phosphodiester bond to crease a new mRNA polymer chain.