Question

Give reason why genetic codes are triplet code ?

Answer 1

DNA found in the cell's nucleus, contains the genetic code. In actuality, there are four nitrogenous bases in DNA--Adenine, Guanine, Cytosine and Thymine. These pair according to the rules--A pairs with T and C pairs with G. DNA is a double--stranded molecule in the shape of a double helix. Either side of the DNA molecule can serve as a template for messenger RNA to copy in a process called transcription. If the DNA code reads TAC-GGC-TTA, then the complementary mRNA code would be AUG -CCG-AAU. There is no thymine in RNA, so it is substituted with the base Uracil(U). In the genetic code chart, each triplet or codon corresponds to a particular amino acid.