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A gene (def) is a segment of DNA that codes for a functional product (mRNA, tRNA, or rRNA). Since the vast majority of genes are transcribed into mRNA and mRNA is subsequently translated into polypeptides or proteins, most genes code for protein synthesis. gene (def) is a segment of DNA that codes for a functional product (mRNA, tRNA, or rRNA). Since the vast majority of genes are transcribed into mRNA and mRNA is subsequently translated into polypeptides or proteins, most genes code for protein synthesis.
RNA is needed to make proteins. DNA is not used to make proteins directly. Translating the genetic code of DNA involves another type of molecule, RNA. RNA, or ribonucleic acid, carries the information from DNA to a ribosome, where the amino acids are brought together to form a protein. DNA actually codes for RNA.Three different types of RNA are involved in making proteins.They are named for their functions: 1  messenger RNA (mRNA). 2  ribosomal RNA (rRNA).NA is needed to make proteins. DNA is not used to make proteins directly. Translating the genetic code of DNA involves another type of molecule, RNA. RNA, or ribonucleic acid, carries the information from DNA to a ribosome, where the amino acids are brought together to form a protein. DNA actually codes for RNA.