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WAEC Biology 2023 Question 46

Question 46

Mendelian Inheritance

The illustration below is a genetic diagram:
Gametes across the top: E, E. Gametes down the side: E, e.
Row E: I, II
Row e: III, IV
What do the labels I, II, III and IV respectively represent?

  1. A.EE, EE, EE and EE
  2. B.Ee, Ee, EE and Ee
  3. C.EE, EE, Ee and Ee
  4. D.EE, EE, Ee and ee.
Show the answer and explanation

Answer: C (EE, EE, Ee and Ee)

Explanation

Combine each row gamete with each column gamete: E + E gives EE for I and II; e + E gives Ee for III and IV.