The anterior–posterior axis of a Drosophila embryo is first established by certain (a) homeotic genes (b) maternal effect genes (c) segmentation genes (d) proto-oncogenes (e) pair–rule genes

In a shocking discovery, biologists discover dragons! Dragon geneticists determine that flame eyes (F) are dominant to blue eyes (f) and burbling (B) is dominant to whistling (b). They suspect that the two genes are linked in one of the autosomes. They mate a true-breeding, flame-eyed, burbling female with a true-breeding, blue-eyed, whistling male. They then mate a pair of offspring.  a) Assuming dragon genetics follows the same rules as fruit flies, what ratio of phenotypes would you expect in the F2 generation if the genes were not linked? (Remember you are crossing FfBb x FfBb).   b) If the genes are linked, which of the  F2 phenotypes would occur at a lower frequency than would be expected if the genes were not linked?

Compare and contrast the experimental advantages of Drosophila and C. elegans in the study of developmental genetics.

Which Position-effect variegation in Drosophila?