Advertisements
Advertisements
Questions
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?
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Write the contributions of the following scientists in deciphering the genetic code.
George Gamow; Hargobind Khorana; Marshall Nirenberg; Severo Ochoa
Name the anticodon required to recognize the following codon: AAU.
One of the following is true with respect to AUG.
DNA is a polymer of nucleotides which are linked to each other by 3’-5’ phosphodiester bond. To prevent polymerisation of nucleotides, which of the following modifications would you choose?
Khorana first deciphered the triplet codons of ______.
The number of base substitution possible in amino acid codons is ______.
Some amino acids are coded by more than one codon, hence the genetic code is ______.
The mutations that involve addition, deletion or substitution of a single pair in a gene are referred to as ______.
Select the incorrectly matched pair.

AUG on the mRNA will result in the activation of which of the following RNA having the correct combination of amino acids:
| Site A | Site B | |
| A. | UAC | Methionine |
| B. | Methionine | UAC |
| C. | Methionine | AUG |
| D. | AUG | Methionine |
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?
Frame shift mutations are caused by ______.
Which of the following statements is the most appropriate for sickle cell anaemia?
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.
All the 64 codons in the dictionary of genetic code were deciphered by ______.
How many codons in total exist in the genetic code?
Which scientist proved the triplet nature of the genetic code through frame-shift mutation experiments in 1961?
What is the wobble effect in the context of the genetic code?
How many codons code for amino acids and how many are stop codons?
