Out of 64 codons , 61 codons code for 20 types of amino acid. It is called

Out of 64 codons, 61 codons codes for 20 types of amino acids

Out of 64 codons , 61 codons code for 20 types of amino acids , it is called :

64 codons code for

Out of 64 codons , 61 codons code for 20 types of amino acid. This characteristics of genetic code is called

..... codons out of 64 codons, code for 20 amino acids.