At 20C or 25C heterozygotes are semi-Dpy and segregate semi-Dpys (heterozygotes), Dpys (dpy-25/dpy-25) and animals which arrest as Dpyish young larvae (let-552/let-552). Maintain by picking semi-Dpy. At 15C it is difficult to distinguish between let-552 homozygotes and dpy-25 homozygotes (e817 is inviable at 15C).

Heterozygotes are WT and segregate WT, Lethal Rollers (arrested 2-fold hatchlings), and Unc-4 mIn1(mC6) homozygotes. Pick WT and check for correct segregation of progeny.

Heterozygotes are WT and segregate WT, Lethal Uncs and Roller mIn1 homozygotes. let-552 unc-4 chromosome is well balanced. Rol does not express until late L4/early adult. Pick WT and check for correct segregation of progeny.

Heterozygotes are WT and segregate WT, DpyUnc [mIn1(mc6) homozygotes], and two-fold arrest Let Rol progeny. Well balanced. Male stock. Cross WT males to WT hermaphrodites and check for correct segregation of progeny.

Heterozygotes are WT and segregate WT, DpyRol mIn1 homozygotes and 2-fold arrest Unc larvae. Male stock; mate WT males and WT hermaphrodites to maintain.

Dark-bodied, unmarked variant of mIn19mC6) with small broods. Presumably balances let-552 to rol-1 (hermaphrodite stock obtained from outcrossing these males to dpy-10 unc-4 was shown to balance this interval). Isolated from DR1982 as a stock that no longer segregated Dpy-10 animals. Not clear whether this strain is the result of chromosome rearrangement in DR1982, or if DR1982 stock was a mixture of mIn1(+)/mIn[dpy-10] and mIn1(+) homozygotes.