What is transcription?
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Answers
Transcription
Explanation:
Transcription is the process of copying a segment of DNA into RNA.
Transcription process in the following general steps:
1.RNA polymerase,together with one or more general transcription factors,binds to promoter DNA.
2.RNA polymerase generates a transcription bubble,which separates the two strands of the DNA helix.This is done by breaking the hydrogen bonds between complementary DNA nucleotide.
3.RNA polymerase adds RNA nucleotide (which are complementary to the nucleotide of one DNA strand).
4.RNA sugar phosphate backbone forma with assistance from RNA polymerase to form an RNA strand.
5.Hydrogen bonds of the RNA-DNA helix break,freeing the newly synthesized RNA strand.
6.If the cell has a nucleus ,the RNA may be further processed.This may include polyadenylation,capping and splicing.
7.The RNA may remain in the nucleus or exit to the cytoplasm through the nuclear pore complex.