what is mean by central dogma
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Central dogma is a theory in genetics and molecular biology.The central dogma of biology describes just that. It provides the basic framework for how genetic information flows from a DNA sequence to a protein product inside cells. This process of genetic information flowing from DNA to RNA to protein is called gene expression.The information in the DNA of every cell is converted into small, portable RNA messages.
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: A theory in genetics and molecular biology subject to several exceptions that genetic information is coded in self-replicating DNA and undergoes unidirectional transfer to messenger RNAs in transcription which act as templates for protein synthesis in translation.
or....
The central dogma of molecular biology describes the two-step process, transcription and translation, by which the information in genes flows into proteins: DNA → RNA → protein. Transcription is the synthesis of an RNA copy of a segment of DNA.