The '22622DL' chromosome (in which wupA, l(1)16Fe and l(1)16Fm are inactivated) is dominant lethal.
Separable from: wupA22622DL. Separable from: l(1)16Fm22622DL. Mutation affecting the 'dominant lethal' domain of 16F which inactivates the wupA, l(1)16Fe and l(1)16Fm genes.