Which of the following traits in humans is an example of physiological variation? by Sunday | Dec 23 | Biology WAEC | 0 comments A. skin colour B. fingerprint C. tongue rolling D. height Correct Answer: Option C – tongue rolling Users Also Read These:Which of these physiological variations is sex-linked?Which of the following traits is not a morphological…Which of the following traits in humans can be…Which of these traits shows discontinuous variation?Which of the following is an example of…