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CBSE Class 12-science Answered

EXPLAIN  THE  CENTRAL  DOGMA  WITH  THE  HELP  OF  DIAGRAM
Asked by pardeepkumar2281 | 03 Oct, 2018, 07:47: PM
answered-by-expert Expert Answer
DNA acts as the repository of genetic information. The mRNA serves as a link between the DNA and polypeptide chain. It is called one-way flow of information or central dogma. This concept was proposed by Crick in 1958. The flow of information can be represented as follows:
 
 
In viruses, DNA is synthesised on RNA template with the help of enzyme RNA dependent DNA polymerase (reverse transcriptase). mRNA transcribed from the DNA participates in protein synthesis. It is called the central dogma reverse. The process of DNA synthesis on RNA is called reverse transcription or inverse flow of information. This concept was proposed by D. Baltimore in 1970. The flow of information can be represented as follows:
 
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