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WAEC Biology 2008 Question 46

Question 46

Variation

Which of the following statements about phenylthiocarbamide (PTC) is not correct?

  1. A.Some people find the taste of PTC to be bitter
  2. B.Others find this substance to be tasteless
  3. C.Ability to taste this chemical is heritable
  4. D.Ability to taste the chemical is not heritable.
Show the answer and explanation

Answer: D (Ability to taste the chemical is not heritable.)

Explanation

PTC tasting is controlled by a gene and is inherited, so saying it is not heritable is wrong.