Four-winged fly--see EBL-1 for two-winged fly
- Four-winged fly--see EBL-1 for two-winged fly
- Caltech Photographs
- Photographs of Individuals
- 1 photographs
- Two wings versus four. Ed Lewis’s experiments with the bithorax complex (BX-C), a cluster of closely linked genes in Drosophila, produced a mutant with a double thoracic segment, hence an extra pair of wings. This photo was first published in 1982.