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Type: Multiple-Choice
Category: DNA, RNA, and Genetics
Level: Grade 9
Tags: DNA
Author: PMISIAS
Last Modified: 13 days ago

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DNA, RNA, and Genetics Question

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Grade 9 DNA, RNA, and Genetics

In the ladder analogy of the DNA molecule, the "rungs" (steps) of the ladder are
  1. sugars.
  2. phosphates.
  3. paired nitrogenous bases.
  4. joined sugar and phosphate.
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