In this article we will discuss about the discovery and special features of genetic code. Once the role of DNA as a hereditary material was established, it was clear that DNA contained the information for the formation of protein molecules or polypeptides. The sequence of purines and pyrimidines bases along the DNA molecule determines the sequence of amino acids in [...]
In this article we will discuss about the functional aspects and mechanisms of genetic code. Functional Aspects of Genetic Codon: All the amino acids except methionine and tryptophan are specified by more than one codon. Three amino acids—leucine, serine and orginine—are each specified by six different codons. Isoleucine has three codons, and the other amino acids each have either two [...]
The Genetic Code: The four letter language of nucleic acids is translated into the twenty letter language of the proteins viz the genetic code. The early genetic experiments indicated that each amino acid is coded for by a certain number of successive nucleotides in DNA. The best way of deciphering the genetic code therefore would be to compare the nucleotide [...]