In horses, black coat color is influenced by the dominant allele (B), and chestnut coat color is ...

In horses, black coat color is influenced by the dominant allele (B), and chestnut coat color is influenced by the
  recessive allele (b). Trotting gait is due to a dominant gene (T), pacing gait to the recessive allele (t). If a homozygous
  black trotter is crossed to a chestnut pacer,
  (a) What will be the phenotypes of the F1 and F2 generations?
  (b) Which phenotype will be the most common in the F2 generation?
  (c) Which genotype will be the most common in the F2 generation?
  (d) Which of the potential offspring will be certain to breed true? What will be an ideal response?
 
 

Question 2

In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color.
  The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for
  white (p). A tall plant with purple flowers crossed with a tall plant with purple flowers produces 3/4 tall purple and 1/4 tall
  white. What is the genotype of the parents? What will be an ideal response?