three different types of rna
There are 4 types of RNA, each encoded by its own type of gene: 1  mRNA - Messenger RNA: Encodes amino acid sequence of a polypeptide. 2  tRNA - Transfer RNA: Brings amino acids to ribosomes during translation.  rRNA - Ribosomal RNA: With ribosomal proteins, makes up the ribosomes, the organelles that translate the mRNA.