Moderate allele; shows a medium Minute phenotype with delayed hatching. 50% of females and 10% of males show an abnormal abdomen effect. Most females are sterile and the remainder produce few progeny. RK3(A).
Dl1 is viable in double heterozygous combination with M(2)31A1 and sometimes produces an ey-like mutant phenotype. Dl3 is viable in double heterozygous combination with M(2)31A1.