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 the following characters is not an example…An example of continuous variation is?Which of the following traits in humans can be…Which of the following is an example of…Which of the following traits is not a morphological…