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प्रश्न
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.
A single base mutation in a gene may not ‘always’ result in loss or gain of function. Do you think the statement is correct?
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उत्तर
The statement is correct. Because of degeneracy of codons, mutations at third base of codon, usually does not result into any change in phenotype. This is called silent mutations.
Notes
Students should refer to the answer according to their questions.
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संबंधित प्रश्न
Give an example of a codon having a dual function.
Write the contributions of the following scientists in deciphering the genetic code.
George Gamow; Hargobind Khorana; Marshall Nirenberg; Severo Ochoa
Answer the following question.
State the importance of a Genetic code in protein biosynthesis.
Give reasons:
Genetic code is ‘universal’.
Name the anticodon required to recognize the following codon: GCA.
One of the following is true with respect to AUG.
Genetic code is ______.
Frame shift mutation occurs when ______.
Khorana first deciphered the triplet codons of ______.
Out of A=T, G =C pairing, bases of DNA may exist in alternate valency state owing to arrangement called ______.
H. J. Muller was awarded Nobel Prize for his ______.
Which out of the following statements is incorrect?
Sickle cell anemia results from a single base substitution in a gene, thus it is an example of ______.
Phenylalanine is a ______.
Methionine carrying tRNA has anticodon:
Genetic code was discovered by:
What would happen if in a gene encoding a polypeptide of so amino acid 25th (UAC) is match to UAA?
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?
Which one of the following is a termination codon?
Who proposed that the genetic code for amino acids should be made up of three nucleotides?
