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WAEC Biology 2006 Question 52

Question 52

Variation

Which of the following traits in humans is not a morphological variation?

  1. A.Height
  2. B.Shape of head
  3. C.Colour of skin
  4. D.Ability to roll the tongue
Show the answer and explanation

Answer: D (Ability to roll the tongue)

Explanation

Tongue rolling is an ability (physiological variation), while height, head shape and skin colour are visible body features.