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WAEC Biology 2003 Question 57

Question 57

Mendelian Inheritance

In Mendel's experiments, it was discovered that the F1 generation of a cross between a brown cock and a white hen were all brown because the gene for the

  1. A.brown colour was recessive
  2. B.white colour was dominant
  3. C.brown colour was dominant
  4. D.white colour did not combine
Show the answer and explanation

Answer: C (brown colour was dominant)

Explanation

When all F1 offspring show only one parent's trait, that trait is dominant and hides the other (recessive) one.