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प्रश्न
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?
विकल्प
Remove/Replace 3' OH group in deoxy ribose
Remove/Replace 2' OH group with some other group in deoxy ribose
Both ‘B’ and ‘C’
Replace purine with pyrimidines
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उत्तर
Remove/Replace 3' OH group in deoxy ribose
APPEARS IN
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
Differentiate between the genetic codes given below:
Unambiguous and Universal
Give reasons:
Genetic code is ‘universal’.
Name the anticodon required to recognize the following codon: CGA
Name the anticodon required to recognize the following codon: UAU
One of the following is true with respect to AUG.
Khorana first deciphered the triplet codons of ______.
Some amino acids are coded by more than one codon, hence the genetic code is ______.
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 ______.
How many codons code for amino acid?
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?
Based on your understanding of genetic code, explain the formation of any abnormal hemoglobin molecule. What are the known consequences of such a change?
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.
