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WAEC Biology 2015 Question 45

Question 45

Mendelian Inheritance

Use the diagram below. What are the genotypes of the parents if the gene for skin colour is H?

Diagram for this question
  1. A.Spotted leopard HH, black panther hh
  2. B.Spotted leopard HH, black panther Hh
  3. C.Spotted leopard Hh, black panther Hh
  4. D.Spotted leopard Hh, black panther hh
Show the answer and explanation

Answer: A (Spotted leopard HH, black panther hh)

Explanation

The black parent shows the recessive trait, so it is hh. All F1 are spotted (Hh), which means the spotted parent gave H every time: it is HH.