What is the main function of mRNA during translation?

The primary function of messenger RNA (mRNA) during translation is to decode the genetic information contained within the DNA and guide the synthesis of proteins. During this process, mRNA serves as the template that provides the sequence of nucleotides corresponding to the amino acids that will make up a protein. Each three-nucleotide group, known as a codon, on the mRNA strand specifies a particular amino acid. As ribosomes read the mRNA, transfer RNA (tRNA) molecules bring the appropriate amino acids to the growing polypeptide chain based on the codon sequence. This mechanism ensures that proteins are synthesized accurately according to the genetic instructions, enabling the expression of genes into functional products.