WAEC Biology 2022 Objective — Question 43
Question 43 of 50 from the West African Examinations Council (WAEC) Biology 2022 Objective paper, with the correct answer and a full explanation.
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Which of the following traits in humans is an example of physiological variation?
- A. Skin colour
- B. Finger-print
- C. Tongue rollingCorrect
- D. Height
Explanation
Tongue rolling is a physiological/functional trait variation (an ability), distinguishing it from purely physical/structural traits like skin colour, fingerprint pattern, or height.
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