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This diagram depicts the translation of mRNA and synthesis of proteins by ribosomes in the cell.

This diagram depicts the translation of mRNA and the synthesis of proteins by ribosomes in the cell.

LadyofHats, Wikipedia Commons
Translation is the initial step in the production of proteins by the cell. Translation uses the product of transcription, mRNA, as the template for constructing a sequence of polypeptides. This is done according to the genetic code. Each mRNA base signifies a series of three amino acids. The amino acids join to form polypeptides, which are modified to become proteins.

Translation is done by the ribosomes in a cell's cytoplasm. There are four stages of translation: activation, initiation, elongation, and termination. These steps describe the growth of the amino acid chain.

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