_TRE_ _IMG_01_09-gene_expression.jpg AligN=RighT
Central dogma of genetics.

Gene expression involves transcription of DNA into mRNA, followed by translation of mRNA on a ribosome into a protein, which is made of amino acid subunits.

The translation requires a dictionary, or genetic code.

_LI_RNA is similar to DNA except:

  • it has Uracil (U) in place of Thymine (T).

  • the sugar in its nucleotides is ribose instead of deoxyribose.