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ICSE Class 10 Biology Question 10 of 18

Structure of Chromosomes, Cell Cycle and Cell Division — Question 14

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Question

Question 14

The lengthwise arrangement of DNA mainly consists of a phosphate group attached with :

  1. Hexose sugar
  2. Purines
  3. Pentose sugar
  4. Pyrimidines
Answer

Pentose sugar

Reason — The lengthwise arrangement of DNA mainly consists of a phosphate group attached with five-carbon pentose (ribose) sugar.