Heterozygotes are WT and segregate WT, Lethal Twitchers, and dead eggs. Lethal mid-larval (leaky). Maintain by picking WT. Heterozygotes twitch in 1% nicotine.

Heterozygotes are WT and segregate WT, dead eggs and Twitchers that arrest as larvae. Maintain by picking WT. Hets twitch in 1% nicotine.

Heterozygotes are WT and segregate WT, DpyUnc, and Lethal Unc-4 (lethal mid-larval). Maintain by picking WT.

Heterozygotes are WT and segregate WT, unc-4, and lethal mIn1 homozygotes. 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.

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 semi-Dpy and segregate semi-Dpy, Unc, and DpyLet.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. The DpyLets are sterile adults. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLets. Lethal mid-larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. The DpyLets are adult steriles. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. The DpyLet are adult steriles. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc, and DpyLets. Lethal early larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. Lethal early larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLets. The DpyLets are adult steriles. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLets. The DpyLets are adult steriles. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpys, Uncs and Lets. Lethal mid-larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. Lethal early larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. Lethal early larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. The DpyLet are adults which lay eggs that do not hatch. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc, and DpyLets. DpyLets are adult steriles. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Vul, DpyLet and dead eggs. Lethal early larval. Maintain by picking semi-Dpy.

Heterozygotes are WT and segregate WT, DpyUnc and dead eggs. Maintain by picking WT.

Heterozygotes are semi-Dpy and segregate semi-Dpy and dead eggs (mDf7/mDf7, nT1/nT1 and aneuploids). This strain was generated by the Genetic Toolkit project, which should be acknowledged in any publications resulting from its use: The Genetic Toolkit is funded by the NIH National Center for Research Resources (NCRR) (USA) to Ann M. Rose, David L. Baillie, and Donald L. Riddle. Report all experimental results to Don Riddle. Rec'd new stock 11/99 from Riddle lab.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Vul, and dead eggs. Homozygous let-276 are dead eggs. Maintain by picking semi-Dpy.

Heterozygotes are WT and segregate WT, Vul, DpyLet and dead eggs. Lethal early larval (L1) at 20C and 25C. Maintain by picking WT.

Heterozygotes are semi-Dpy and segregate semi-Dpy, early larval lethals and dead eggs. This strain was generated by the Genetic Toolkit project, which should be acknowledged in any publications resulting from its use: The Genetic Toolkit is funded by the NIH National Center for Research Resources (NCRR) (USA) to Ann M. Rose, David L. Baillie, and Donald L. Riddle. Report all experimental results to Don Riddle.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Vul, DpyLet and dead eggs. The DpyLets are Sterile adults. Maintain by picking semi-Dpy.

T2A::wrmScarlet(1-10) fused to the C-terminus of endogenous GLH-1. The T2A self-cleaving peptide separates wrmScarlet(1-10) from GLH-1 post-translationally so that wrmScarlet(1-10) disperses throughout germ cell nuclei and cytoplasm. wrmScarlet(1-10) is also maternally loaded into embryos, where it persists through early and mid-embryonic development. Proteins tagged with the 18aa wrmScarlet(11) sequence will bind wrmScarlet(1-10) in the germline and early embryo to emit wrmScarlet fluorescence. Broods from DUP237 are similar to wild-type at permissive and restrictive temperatures. Transgene tag was inserted by CRISPR/Cas9 in an N2 background. Reference: Goudeau J, et al. Genetics. 2021 Apr; 217(4): iyab014. PMID: 33693628.

Heterozygotes are Unc and GFP+ with signal in the pharynx. atl-1(tm853) homozygotes are non-Unc, viable, GFP-, and produce 100% dead embryos. qIs50 is an insertion of ccEx9747 with markers: myo-2::GFP expressed brightly in the pharynx throughout development, pes-10::GFP expressed in embryos, and a gut promoter (F22B7.9) driving GFP in the intestine. nT1[unc-?(n754) let-? qIs50] is also known as DnT1[qIs50]. qIs50 is apparently inserted on DnT1. qIs50 is somewhat dimmer than the similar qIs51.

tm1086 is homozygous lethal. Maternally rescued. Fails to produce viable progeny due to a defect in repairing meiotic DNA double-strand breaks. Chromosomes are visibly aggregated at diakinesis. Maintain by picking GFP progeny and checking that the non-GFP progeny that are produced fail to give viable progeny. qIs48 is an insertion of ccEx9747 with markers: myo-2::GFP expressed brightly in the pharynx throughout development, pes-10::GFP expressed in embryos, and a gut promoter driving GFP in the intestine, and is homozygous lethal.

eagIs6 [spn-4p::jGCaMP7s::pie-1 3'UTR + HygR [*fxIs10] ] II. ujIs113 [pie-1p::mCherry::H2B::pie-1 3'UTR + nhr-2p::his-24::mCherry::let-858 3'UTR + unc-119(+)]. CaFE reporter (calcium inducible fluorescence in germline). Calcium-inducible fluorescent jGCaMP7s protein codon-optimized for elegans and expressed in germline enables visualization of calcium wave upon fertilization. H2::mCherry marks germline nuclei. Reference: Toperzer KM, et al. Biol Open. 2023 Sep 15;12(9):bio059832. PMID: 37602653.

oxTi1126 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + myo-2p::2xNLS::cyOFP::let-858 3'UTR + lox2272] III. Knock-in into previously modified unc-119(ox819) endogenous locus. Cas9 insertion marked with myo-2p::cyOFP (cyan-excitable Orange Fluorescent Protein), a long-Stokes-shift fluorescent protein that is spectrally separable from common green and red fluorophores. The Cas9 transgene was optimized for germline expression by including 4 large PATC-rich introns from smu-2. Lower activity than other Cas9 strains, but useful because Cas9, Cre, and unc-119 are in a single unit. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxTi1127 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + myo-2p::2xNLS::cyOFP::let-858 3'UTR + lox2272] III. Inserted into F53A2.9. High Cas9 activity. Integrated Cas9 transgene linked to unc-119(ox819). Cas9 insertion marked with myo-2p::cyOFP (cyan-excitable Orange Fluorescent Protein), a long-Stokes-shift fluorescent protein that is spectrally separable from common green and red fluorophores. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxTi1127 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + myo-2p::2xNLS::cyOFP::let-858 3'UTR + lox2272] III. Inserted into F53A2.9. High Cas9 activity. Superficially wild-type. Cas9 insertion marked with myo-2p::cyOFP (cyan-excitable Orange Fluorescent Protein), a long-Stokes-shift fluorescent protein that is spectrally separable from common green and red fluorophores. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxTi1128 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + myo-2p::2xNLS::cyOFP::let-858 3'UTR + lox2272]) I. Cas9 insertion marked with myo-2p::cyOFP (cyan-excitable Orange Fluorescent Protein), a long-Stokes-shift fluorescent protein that is spectrally separable from common green and red fluorophores. Inserted into W01A8.6. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxTi1128 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + myo-2p::2xNLS::cyOFP::let-858 3'UTR + lox2272]) I. Outcrossed to remove unc-119 mutation. Superficially wild-type. Cas9 insertion marked with myo-2p::cyOFP (cyan-excitable Orange Fluorescent Protein), a long-Stokes-shift fluorescent protein that is spectrally separable from common green and red fluorophores. Inserted into W01A8.6. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

Heterozygotes are Unc and segregate Unc, non-Unc Steriles, larval lethals and dead eggs. dx19 is a strong lin-45 raf allele: dx19 homozygotes from dx19/+ heterozygous parents are 13% larval lethal and among the adults, 100% are Sterile and Vul.

Homozygous sterile deletion balanced by bli-4- and GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP tm1514 homozygotes (sterile, tm1514 m+z- are larval lethal). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Csankovszki G, et al. (2009) Curr Biol 19(1):9-19.

Heterozygotes are Unc and segregate additional hets, Unc-76 om40 homozygotes and dead eggs. om40 animals have multiple germline defects.

Heterozygotes are Unc and segregate Unc, WT which give only dead eggs, and dead eggs. Maintain by picking Unc.

Heterozygotes are Unc and segregate Unc, WT which give only dead eggs, and dead eggs. Maintain by picking Unc. Received new stock 11/2002.

mom-2(or77) is a recessive, non-conditional maternal-effect embryonic lethal. Weak allele of mom-2/Wnt (splice acceptor mutation in last exon (exon6). 8% of mutant embryos lack gut. Heterozygotes are Unc.

Heterozygotes are Unc and segregate Unc, WT which give only dead eggs, and dead eggs. Maintain by picking Unc.

let-99(or204) is temperature-sensitive, maternal-effect, embryonic-lethal. Nearly completely penetrance of lethality at 26C. Viable at 15C. Maintain at 15C. Reference: Goulding MB, et al. J Cell Biol. 2007 Sep 24;178(7):1177-91.

Heterozygotes are Unc and segregate Unc and wild type animals which give only dead progeny.

or28 is a non-conditional maternal-effect embryonic lethal mutant ; the anterior pharynx is absent. and embryonic lethality is 100% penetrant. Pick single WT heterozygous hermaphrodites to maintain strain; these hets fill up with a mix of dead embryos and larvae [11/16 dead embryos due to aneuploidy from translocation segregation and lethal homozygous hT2; vulvaless due to homozygous lin-2(e1309) mutation; about 10% of lin-2(e1309) worms are leaky and lay eggs/can be mated into]. The homozygous or28 hermaphrodites fill up with dead embryos. The lin-2 background helps to score embryonic lethality for both heterozygotes and or28 homozygotes. or28 is a G to D mis-sense mutation at amino acid position 123.

or28 is a non-conditional maternal-effect embryonic lethal mutant ; the anterior pharynx is absent. and embryonic lethality is 100% penetrant. Pick single WT heterozygous hermaphrodites to maintain strain; these hets fill up with a mix of dead embryos and larvae [11/16 dead embryos due to aneuploidy from translocation segregation and lethal homozygous hT2; vulvaless due to homozygous lin-2(e1309) mutation; about 10% of lin-2(e1309) worms are leaky and lay eggs/can be mated into]. The homozygous or28 hermaphrodites fill up with dead embryos. The lin-2 background helps to score embryonic lethality for both heterozygotes and or28 homozygotes. Strain produces a lot of males due to him-8(ec56). or28 is a G to D mis-sense mutation at amino acid position 123.