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JAMB Biology 1979 Question 33

Question 33

Mendelian Inheritance

If you cross-breed a tall variety (Tt) of maize with a short variety (tt), the ratio of tall to short plants in the offspring will be

  1. A.2:1
  2. B.1:2
  3. C.1:1
  4. D.1:3
  5. E.3:1
Show the answer and explanation

Answer: C (1:1)

Explanation

Tt × tt gives Tt and tt in equal numbers, so 1 tall : 1 short.