A homozygous tall, red flower plant was crossed with a homozygous dwarf, white flower plant. The F1 were selfed and 160 F2 plants were obtained.
   
      a.(i)  Name the type of genetic cross.    [1 marks]
        (ii) State one reason for the answer in 4(a)(i).    [1 marks]

      b.(i)  What is evolution?  [2  marks]
        (ii)  With the aid of a genetic diagram, state the phenotypic ratio of F2 generation.    [13 marks]
        (iii) Calculate the number of tall and white flowers that  would be obtained in the F2 generation.  [3  marks]