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The overall shape of a DNA molecule is a:

  • A double helix
  • B single line
  • C round sphere
  • D solid cube

Correct answer: A. double helix

Explanation: DNA has a twisted double-helix structure.

Concept context

DNA structure, replication, transcription, translation, the genetic code, and gene regulation (lac operon). The single most important chapter for NEET molecular biology.

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