In peas, a gene for tall plants (T) is dominant over its allele for short plants (t). The gene for smooth peas (S) is dominant over its allele for wrinkled peas (s). The genes are not linked. Determine both phenotypic and genotypic ratios for the results of each of the following crosses:

1.1 homozygous tall wrinkled x short heterozygous smooth.                  [26 marks]

1.2. short heterozygous smooth x heterozygous tall wrinkled.                 [26 marks]

1.3 heterozygous tall homozygous smooth x short wrinkled.                  [26 marks]

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