In a particular species of plant, tall is dominant to short, and orange petals are dominant to the recessive white colour. Use T and t to symbolize the alleles for height, and F and f to symbolize the alleles for flower colour. A homozygous tall white flower is crossed with a flower heterozygous for both traits.

1.1 List the genotypes of the parents.  

1.2 What are the F1 GENOTYPIC and PHENOTYPIC ratios?  

1.3 What are the F2 genotypic and phenotypic ratios?