IS IT SAVE AND PROPER TO SAY THERE ARE ONLY 61 CODONS SINCE THE REMAINING THREE ARE STOP CODONS AND CARRY NO CODE OR GENETIC MATERIAL..AND MOST IMPORTANTLY CODONS ARE DEFINED AS GENE CODES FOR THE PRODUCTION OF PROTEINS IN DIFFERENT PARTS OF THE BODY..AS FAR AS IM CONCERNED, THE REMAINING THREE DO NOT ATTRACT AMINO ACIDS, THEREFORE THEY ARE NOT GENE CODES NOR CODONS..

Question

anonymous · Answer

A codon is defined as a sequence of three nucleotide which code for aa. So I'd say it is correct what you say. 64 triplets, 61 codons. but keep in mind that ending codons (which are really called this way although they code for no aa) associate into the active site of the ribosome to releasing factors (RF). these are proteins similar in their 3D structure to tRNAs. there are three RF, one for each stop codon. they bring into the active site small proteins which cause the releasing of the peptide chain from the ribosome. so, they code for no aa, but they code for something, and a proper termination of transcription is as important as the aa sequence

anonymous · Answer

no ! it's not correct to say. Stop codons are also very crucial in the sense that they terminate further addition of amino acids, so combinations of different amino acids give different proteins.

anonymous · Answer

TRSRAM, i want you to tell me the definition of a codon

anonymous · Answer

CHICA90, you were right intially then you contradicted your validation...you defined codon and what it is they do then you go and mention something else..what do you say your final conclusion is?

anonymous · Answer

a codon synthesizes for an aa. RFs are NOT amino acids. therefore ending triplets are not codons. I just wanted to point out that it's not completely true that they code for nothing. they code for something although this something is not an amino acid

anonymous · Answer

@Treyjibade, i am sorry for my wrong understandig !

anonymous · Answer

TRSRAM APOLOGIES ACCEPTED. BUT NO NEED TO APOLOGISE, WE R INFALLIBLE BEINGS...NOW CHICA90, DO SCIENTIST KNOW ABOUT THIS INCONTROVERTIBLE FACT ABOUT THE THREE STOP "CODONS"? SHALL WE LET THE MASS AWARE lol