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 trait in humans is not a…Which of these traits shows discontinuous variation?Which of the following is an example of continuous…Which of the following characters is not an example…