Molecular Basis of InheritanceHard
Question
Whose experiments cracked the DNA and discovered unequivocally that a gentic code is a triplet ?
Options
A.Nirenberg and Mathaei
B.Hershey and Chase
C.Moegan and Sturtevant
D.Beadle and Tatum
Solution
The experimen of triplet code was simply an assumption till 1961, when Nirenberg and Mathaei prove its existence by experiments. They were able to synthesize artificial mRNA which contained only one nitrogenous base, ie, uracil. This synthetic poly U srquence was then placed in a cell free system containing protein synthesizing enzymes (extracted from bacterium E. coli) and 20 amino acids togethel with necessary ATP. During the process, a small polypeptide molecule was produced, which was formed by the linking of phenylalanine. This suggested that UUU is tha code for phenyl alanine. Nirenberg got Nobel Prize for his contributions.
Create a free account to view solution
View Solution FreeMore Molecular Basis of Inheritance Questions
In a DNA percentage of thymine is 20. What is the percentage of guanine ?...Out of A = T, G ≡ C pairing, bases of DNA may exist in alternate valency state owing to arranfement called...Production of a human protein in bacteria by gentic engineering is possible because...Consider the following :-(a) Structural gene (b) Messenger RNA(c) Ribosomes (d) Transcription(e) TranslationWhich one of...Which of the following is related to genetic enegineering ?...