What is genetic code and it's 3 characteristics or it explain ????
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Answers
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genetic code means by which DNA and RNA molecules carry genetic information in living cell.
The characteristics of genetic code are :-
1) Triplet nature
A triplet code could make a genetic code for 64 different combinations (4 X 4 X 4) genetic code and provide plenty of information in the DNA molecule to specify the placement of all 20 amino acids. When experiments were performed to crack the genetic code it was found to be a code that was triplet. These three letter codes of nucleotides (AUG, AAA, etc.) are called codons.
2)Commaless
There is no signal to indicate the end of one codon and the beginning of the next. The genetic code is commaless (or comma-free).
3)Chain Termination Codons
The 3 triplets UAA, UAG, UGA do not code for any amino acid. They were originally described as non-sense codons, as against the remaining 61 codons, which are termed as sense codons.
code through which the information contained in nucleic acid sequence is expressed to produce a specific sequence of amino acids.the letters A,G,T and correspond to the nucleotides found in DNA
they are organised codons