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JAMB Biology 2010 Question 41

Question 41

Variation

A dilute solution of phenylthiocarbamide tastes bitter to some people and is tasteless to others. This is an example of

  1. A.discontinuous variation
  2. B.morphological variation
  3. C.continuous variation
  4. D.taste bud variation.
Show the answer and explanation

Answer: A (discontinuous variation)

Explanation

People are either tasters or non-tasters, with no in-between. A character that falls into clear groups like this shows discontinuous variation.