Transcription is the process of creating a complementary RNA copy of a sequence of DNA. Transcription can be explained easily in 4 or 5 steps, each moving like a wave along the DNA. Helicase unwinds/"unzips" the DNA by breaking the hydrogen bonds between complementary nucleotides. RNA nucleotides are paired with complementary DNA bases. RNA sugar-phosphate backbone forms with assistance from RNA polymerase. Hydrogen bonds of the untwisted RNA+DNA helix break, freeing the newly synthesized RNA strand. If the cell has a nucleus, the RNA is further processed (addition of a 3' poly-A tail and a 5' cap) and exits through to the cytoplasm through the nuclear pore complex. for more info: en.wikipedia.org/wiki/Transcription_(genetics)

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