W1118

The w1118 strain is a well-known Drosophila melanogaster laboratory line carrying a white-eye mutation, so adults typically have pale or white eyes rather than the red eyes of wild-type flies. It is widely used in genetics because the white locus and the strain background are useful in crosses, transgenic work, and comparisons with engineered lines. The name is a stock designation, not a breed in the pet sense, and different labs may maintain related sublines.

Handling w1118 requires the same basic fruit fly culture skills as other lab stocks: fresh medium, regular transfers, temperature control, and protection from mites, mold, and accidental mixing. The pale-eye marker makes visual checks easier, but it does not replace careful labeling or source records. Researchers should choose controls thoughtfully because w1118 can differ from other wild-type backgrounds in behavior, physiology, or development depending on the assay. Classroom use benefits from explaining that the eye color is inherited, not a care condition.

Colors: White Eye