9. Please explain: (每 1 小題 2 分) (1) Allopatric speciation

6. To study the inheritance of the white-eye trait in Drosophila melanogaster, Morgan crossed the white-eyed male to a red-eyed female and found that all of the F1 offspring had red eyes. The F1 offspring were then mated to each other, which generated 2,459 red-eyed females, 1,011 red-eyed males, and 782 white-eyed males. (1) How will you interpret these experimental data? (4 分)