Assume that the red and gold plumage of phoenixes is due to a dominant allele (R), while blue and gold is recessive (r). Further assume that the ability to radiate heat is also dominant (H) and that these two genes are linked. What gametes are possible for a female phoenix whose mother was homozygous dominant for both traits and whose father was homozygous recessive for both traits?
A. 1/2 HR and 1/2 hr
B. 1/4 HR, 1/4 Hr, 1/4 hR, and 1/4 hr
C. 1/2 Hh and 1/2 Rr
D. all HhRr