Transcription ：

The synthesis of RNA molecules using  DNA strands as the templates so that the genetic information can be transferred from DNA to RNA.
Four stages: Initiation, Elongation, Termination, Post-transcriptional modification

The whole genome of DNA needs to be replicated, but only small portion of genome is transcribed in response to the development requirement, physiological need and environmental changes.  
DNA regions that can be transcribed into RNA are called structural genes.






[ Last edited by shaojiyeah on 2013-6-19 at 10:17 ]

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