Scientists have discovered a 22nd amino acid, pyrrolysine. http://cbc.ca/stories/2002/05/24/amino_acid020524 What impact could this have on the study of genetics? I don't see anything really earth-shattering about it, it just seems that we can make even more proteins [as if we needed more Please Register or Log in to view the hidden image! ]. Be gentle, I don't know much about this kinda stuff Please Register or Log in to view the hidden image! .