The color of pigeon feathers is a heritable trait that is controlled by different alleles of a single gene as represented in the figure. Blue feather color is dominant to brown feather color. Which of the following statements is true about pigeons with blue feathers and pigeons with brown feathers A. They have identical DNA sequences in the feather color gene

B. They have identical genotypes for the feather color gene

C. They have different sequences of sugars and phosphates in the DNA of the feather color gene

D. They have different sequences of nitrogen bases in the DNA of the feather color gene