Heterozygotes are Unc and segregate Unc and Lethal Unc Twitchers. Lethal early larval. Heterozygotes twitch in 1% nicotine.

Heterozygotes are WT and segregate WT, Lethals (L2/L3 arrest at 20C, some survive to sterile adults at 15C), and DpyRol. Not balanced well: get recombinants. Must maintain by picking hets at each generation and check for proper segregants in F1.

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).

QL descendants anterior, QR descendants slightly posterior to WT. HSN posterior (50%), BDU posterior (50%), DTCs make extra turns. Mild Egl. Male Mating: ME2. mig-14, mom-3, pvl-2, and let-553 are the same gene.

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.

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.

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

Heterozygotes are WT and segregate WT, Uncs and Rollers. or78 zygotic effects: Pv, mild Unc, many explode at vulva upon reaching adulthood. or78 maternal effects: endoderm (E) transformed into mesoderm (MS) in early embryo, severe morphogenesis defect. mig-14, mom-3, pvl-2, and let-553 are the same gene.

Egl. Low penetrance embryonic lethal. mig-14, mom-3, pvl-2, and let-553 are the same gene.

Animals with the duplication are Unc. Animals which have lost the duplication are Dpy Unc and arrest as sterile adults.