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JAMB Biology 1991 Question 39

Question 39

Mendelian Inheritance

When two heterozygotes mate, the dominant trait will appear in

  1. A.the F1 generation only
  2. B.the F2 generation only
  3. C.both the F1 and F2 generations
  4. D.neither the F1 nor F2 generation
Show the answer and explanation

Answer: C (both the F1 and F2 generations)

Explanation

Heterozygotes (Tt) crossed give 3 dominant : 1 recessive, and the dominant trait keeps showing in later generations too.