Advertisements
Advertisements
Question
There is only one possible sequence of amino acids when deduced from a given nucleotides. But multiple nucleotides sequence can be deduced from a single amino acid sequence. Explain this phenomena.
Advertisements
Solution
Some amino acids are coded by more than one codon (known as degeneracy of codons), hence on deducing a nucleotide sequence from an amino acid sequence, multiple nucleotide sequence will be obtained. For e.g., Ile has three codous: AUU, AUC AUA hence a depeptide Met–Ile can have the following nucleotide sequence:
- AUG – AUU
- AUG – AUC
- AUG – AUA
and if, we deduce amino acid sequence for the above nucleotide sequences, all the three will code for Met–Ile
APPEARS IN
RELATED QUESTIONS
Name the anticodon required to recognize the following codon: AAU.
H. J. Muller was awarded Nobel Prize for his ______.
Which out of the following statements is incorrect?
Some amino acids are coded by more than one codon, hence the genetic code is ______.
Percentage of mitochondrial DNA in the cell is:
What would happen if in a gene encoding a polypeptide of so amino acid 25th (UAC) is match to UAA?
George Gamow suggested that each codon coding for an amino acid consists of ______
Statement I: The codon ‘AUG’ codes for methionine and phenylalanine.
Statement II: ‘AAA’ and ‘AAG’ both codons code for the amino acid lysine.
In the light of the above statements, choose the correct answer from the options given below.
Statement I:
The codon ‘AUG’ codes for methionine and phenylalanine.
Statement II:
‘AAA’ and ‘AAG’ are both codons that code for the amino acid lysine.
In light of the above statements, choose the correct answer from the options given below.
Which of the following statements is the most appropriate for sickle cell anaemia?
A single base mutation in a gene may not ‘always’ result in loss or gain of function. Do you think the statement is correct? Defend your answer.
Discuss the process of translation in detail.
All the 64 codons in the dictionary of genetic code were deciphered by ______.
How many amino acids can be coded by a doublet codon system?
According to George Gamow's proposal from 1954, why is the genetic code a triplet code?
What is the start codon and which amino acid does it code for?
Which scientist proved the triplet nature of the genetic code through frame-shift mutation experiments in 1961?
Which enzyme did Severo Ochoa identify as capable of polymerizing RNA with defined sequences in a template-independent manner?
Which three scientists are credited with ultimately deciphering all 64 codons of the genetic code dictionary?
