A set of ~50 targeted deficiencies created by exploiting hybrid element insertion (HEI) and resolution; designed to fill gaps in deletion coverage.
48E12-48F4;49A11-49B6
Fails to complement Df(2R)BSC305.
Inferred to overlap with: Df(2R)BSC305.
Not clear how much of the original P{lacW}k15501 remains, beyond the w+mC.