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NEETZoologyMolecular Basis of Inheritance

What is the chemical difference between DNA and RNA?

Options

  1. APresence of 2'-OH group in RNA
  2. BPresence of Hydrogen bonds in DNA
  3. CAbsence of phosphate groups in RNA
  4. DAbsence of nitrogenous bases in RNA

Correct answer

A. Presence of 2'-OH group in RNA

Step-by-step solution

Stability as one of the properties of genetic material was very evident in Griffith’s ‘transforming principle’ itself that heat, which killed the bacteria, at least did not destroy some of the properties of genetic material. This now can easily be explained in light of the DNA that the two strands being complementary if separated by heating come together, when appropriate conditions are provided. Further, the 2'-OH group present at every nucleotide in RNA is a reactive group and makes RNA labile and easily degradab

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