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Which of the followig traits in humans is an example of physiological variation?

Biology
WAEC 2022

Which of the followig traits in humans is an example of physiological variation?

  • A. skin colour
  • B. fingerprint
  • C. tongue rolling
  • D. height
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Correct Answer: Option C
Explanation

The ability to roll the tongue into a tube shape is a physiological variation in humans. Another example is the blood groups in humans.

Skin colour, fingerprints, and height are directly and more examples of morphological variations in humans than the physiological, meaning they are differences in physical traits or outward appearances. 

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