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What is the main difference between DNA and RNA molecules in terms of their sugar and base composition?

easy 1 mark Class 12 · Biology · Molecular Basis of Inheritance
Answer
RNA contains ribose and uracil, while DNA contains deoxyribose and thymine.

The correct answer is RNA contains ribose and uracil, while DNA contains deoxyribose and thymine. — Summarize that DNA has deoxyribose and thymine, whereas RNA has ribose and uracil.

Step-by-step solution

  1. Identify the sugar in DNA: deoxyribose.
  2. Identify the sugar in RNA: ribose.
  3. Identify the base that replaces thymine in RNA: uracil.
  4. Summarize that DNA has deoxyribose and thymine, whereas RNA has ribose and uracil.
Common mistake: Confusing uracil with thymine

Concept tested: DNA vs RNA structure

Published · How this solution was prepared and checked

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