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JAMB Biology 2008 Question 42

Question 42

Mendelian Inheritance

Use the diagram to answer: Which of the four offspring of the cross will be short if T the gene for tallness is dominant to t?

Diagram for this question
  1. A.I
  2. B.II
  3. C.III
  4. D.IV.
Show the answer and explanation

Answer: D (IV.)

Explanation

Only IV receives t from both parents, giving tt. With no dominant T it is short; I, II and III all carry at least one T.