Calculate the allelic frequencies in the gene pools of the following populations...

1. Calculate the allelic frequencies in the gene pools of the following populations:
a. In a population of rabbits 40% are homozygous black, 40% are brown (b) and 20% are heterozygous black.
b. In a population of snapdragons  30% are red and 20% white.

2. What is the recessive allelic frequency in the gene pools of this population:
81% brown fur individuals, 19% black fur individuals

3. In a population of rabbits at genetic equilibrium, the phenotype frequencies are 75% black and 25% brown. What is the allelic frequency of the brown alleles, the recessive allelic frequency.

Can you guys help me these problems?