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WAEC Biology 2025 Question 16

Question 16

Chromosomes, DNA and Sex Linkage

If the percentage of adenine in the DNA of a human is 32%, what will be the percentage of thymine?

  1. A.27%
  2. B.32%
  3. C.10%
  4. D.16%.
Show the answer and explanation

Answer: B (32%)

Explanation

Adenine always pairs with thymine, so DNA has equal amounts of each: 32% thymine.