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WAEC Biology 2004 Question 54

Question 54

Variation

Which of the following traits in humans can be affected by environmental factors?

  1. A.skin colour
  2. B.eye colour
  3. C.baldness
  4. D.tongue-rolling
Show the answer and explanation

Answer: A (skin colour)

Explanation

Skin colour can change with the environment, e.g. it darkens with exposure to sunlight. Eye colour and tongue-rolling are fixed by genes.