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JAMB Biology 2008 Question 43

Question 43

Mendelian Inheritance

Use the diagram to answer: The genotypic ratio of the offspring of the cross is

Diagram for this question
  1. A.1:2
  2. B.1:2:1
  3. C.1:1:1:1
  4. D.3:1
Show the answer and explanation

Answer: B (1:2:1)

Explanation

The offspring are TT (I), Tt (II and III) and tt (IV), giving 1 TT : 2 Tt : 1 tt.