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WAEC Biology 2007 Question 53

Question 53

Mendelian Inheritance

Two tall plants were crossed; some of their offsprings were tall and others short the possible genotypes of the parent plants were

  1. A.TT and TT
  2. B.TT and tt
  3. C.Tt and Tt
  4. D.Tt and TT
Show the answer and explanation

Answer: C (Tt and Tt)

Explanation

Short offspring (tt) need a t allele from each parent, so both tall parents must be heterozygous, Tt.