TYPES OF RNA.

mRNA

messenger RNA (copies the gene code from DNA)

tRNA

transfer RNA (has a structure that matches w/ a specific amino acid)

rRNA

ribosomal RNA (2 subunits, make up a ribosome)

protein synthesis

• the code of bases on DNA corresponds to sequence of amino acids in a polypeptide (protein)

• the gene code must be copied in the nucleus (transcription), spliced, moved to a ribosome in the cytoplasm (or ER) & finally read to make a polypeptide chain (translation)