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mRNA stands for messenger RNA (ribonucleic acid), one of the three types of RNA molecules in a cell (other two being tRNA or transfer RNA and rRNA or ribosomal RNA). The main function of mRNA is to take the required genetic information, in 3-base codes called codons, from DNA to ribosomes for protein synthesis. DNA contains all the genetic information of the cell, which means all the instructions for various functions of the cell. However, DNA is kept secure in nucleus, bound by nuclear membrane. mRNA carries the required information from inside nucleus to the cytoplasm. The 3-base code or codon allows mRNAs to carry information for as many as 61 amino acid sequences, rest 3 combinations are for stop codons. Along with tRNA and rRNA, mRNA helps in synthesis of proteins required for cell.
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