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प्रश्न
Retroviruses do not follow central Dogma. Comment.
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उत्तर
Genetic material of retrovirus is RNA. At the time of synthesis of protein, RNA is ‘reverse transcribed’ to its complementary DNA first, which is opposite to the central dogma. Hence, retrovirus are not known to follow central dogma.
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संबंधित प्रश्न
Which property of DNA double helix led Watson and Crick to hypothesise semi-conservative mode of DNA replication? Explain.
A nucleoside differs from a nucleotide. It lacks the ______.
Both deoxyribose and ribose belong to a class of sugars called ______.
The fact that a purine base always paired through hydrogen bonds with a pyrimidine base leads to, in the DNA double helix ______.
Who amongst the following scientists had no contribution in the development of the double helix model for the structure of DNA?
How far is each base pair from the next one in DNA double helix model?
During in vitro synthesis of DNA, a researcher used 2’, 3’ – dideoxy cytidine triphosphate as raw nucleotide in place of 2’-deoxy cytidine. What would be the consequence?
What structural difference exists between the pentose sugar found in DNA and the pentose sugar found in RNA?
The phosphate group in a nucleotide is attached to which carbon of the pentose sugar?
What type of bond connects a nitrogenous base to the pentose sugar in a nucleotide?
In a polynucleotide chain, nucleotides are linked together by which type of bond?
Which end of a polynucleotide chain contains a free phosphate group?
The 3′ end of a polynucleotide chain is characterized by the presence of:
The backbone of a polynucleotide chain is formed by which components?
In a DNA double helix, where are the nitrogenous bases located?
What is the significance of the 2′-OH group in ribose compared to deoxyribose?
A nucleotide is the monomer unit of a nucleic acid. Which of the following correctly identifies the three components of a nucleotide?
Which of the following nitrogenous bases is classified as a purine with a double-ring structure?
In a DNA double helix, what is the spatial relationship between the two polynucleotide strands?
