In both prokaryotes and
eukaryotes, there are three main types of RNA – messenger RNA or mRNA,
ribosomal or rRNA, and transfer RNA or tRNA.
mRNA - It carries the
genetic code copied from the DNA during transcription in the form of triplets
of nucleotides called codons.
rRNAs are found in the
ribosomes and account for 80% of the total RNA present in the cell.
tRNAs also act as adapters
in the translation of the genetic sequence of mRNA into proteins. Therefore
they are also called adapter molecules.
