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The correct base pair in DNA molecule is 

Biology
JAMB 2025

The correct base pair in DNA molecule is 

  • A. cytosine - adenine
  • B. cytosine - thymine
  • C. guanine - adenine
  • D. adenine - thymine
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Correct Answer: Option D
Explanation

In a DNA molecule, specific complementary base pairing rules established by Erwin Chargaff dictate which nitrogenous bases can bond together to form the double helix structure. 

Adenine (A) always pairs with thymine (T), forming two hydrogen bonds.

Guanine (G) always pairs with cytosine (C), forming three hydrogen bonds. 

 

There is an explanation video available below.

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Explanation Video

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