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WAEC Biology 2015 Question 46

Question 46

Mendelian Inheritance

According to Mendel's first law of inheritance, segregation of genes occur when

  1. A.tall plants are crossbred.
  2. B.short plants are crossbred.
  3. C.tall plants and short plants are crossbred.
  4. D.plants are crossbred.
Show the answer and explanation

Answer: C (tall plants and short plants are crossbred.)

Explanation

Mendel's first law came from crossing pure tall with pure short pea plants: the pair of factors for height separate (segregate) into different gametes, so short plants reappear in the F2.