Abdomen pigmentation correlates with the regulatory activity of dimorphic element alleles.

<p>(A) The A5 and A6 segment dorsal tergites of <i>D. melanogaster</i> males are fully pigmented, (B–H) whereas the female A5 and A6 tergite pigmentation varies from “Light” to a male-like “Dark” phenotype. (A′–H′) GFP-reporter transgene activity was measured in transgenic pupae at 85 hours after puparium formation (hAPF) and activity measurements were represented as the % of the <i>D. melanogaster Canton^S</i> allele female A6 mean ± SEM. (A′) The regulatory activity of a male <i>Canton^S</i> pupae. The regulatory activity of alleles from the following locations were measured: (B′) Oaxaca, Mexico (called Light 2), (C′) Crete, Greece, (D′) Kuala Lumpur, Malaysia (called Light 1), (E′) Mumbai, India, (F′) Kisangani, Africa, (G′) Uganda, Africa (called Dark 1), and (H′) Bogota, Columbia (called Dark 2).