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Temperature sensitive lethal: inviable at 25C, grows at 20C and 15C. Somewhat sickly. Small brood sizes. At 25C homozygotes have a starved translucent appearance, facilitating Nomarski visualization of neuron processes.

Sensory neurons CEP, ADE, PDE take up FITC; tubular body of CEP cilia disrupted; slightly defective dauer formation.

Wild type strain segregating more wild type and embryonic lethals, in approximately 1:1 ratio.

Animals which have lost the Dup are thin, sterile, and uncoordinated. Maintain by picking WT (Egl).

e1873 allele is the only anc-1 allele in which the molecular lesion has been identified (Starr and Han, 2002) and is considered by the authors to be the reference allele. e1873 does not revert, unlike most other alleles of anc-1. Reference: Hedgecock and Thomson. Cell. 1982 Aug;30(1):321-30. Starr and Han. Science. 2002 Oct 11;298(5592):406-9.

Hermaphrodtes segregate impotent males. Males show very slight swelling of bursa.

Heterozygotes are WT and segregate WT, Dpys, and steriles. mig-6(e1931) hermaphrodites are sterile, with failure of DTC migrations. Gonad sterile, disorganized, otherwise hermaphrodites appear normal. Strain is imperfectly balanced - check for correct segregation of Dpy and Mig from WT hermaphrodites.

WT hermaphrodites which segregate WT hermaphrodites and tra-1 homozygous XX; weakly masculinized class A7, never fertile as males.

tra-2 gain-of-function. Male-female strain. Maintain by mating. References: EMBO J. 2001 Mar 15; 20(6): 1363–1372. Proc Natl Acad Sci U S A. 2004 Aug 24; 101(34): 12549–12554.

Hermaphrodites and males superficially WT. Males lay down a gelatinous plug over the vulva of mated hermaphrodites. Plug formation controlled only by male genotype. Both plg-1 and plg-1/+ males make plugs.

Weak suppression of dpy-20 by sup-23. Medium Dpy.

Weak suppression of dpy-20 by sup-22. Dpy phenotype, but less Dpy than dpy-20 alone.

Males are missing most of the rays and additional alae extend into the tail.

Wildtype hermaphrodites segregating wild-type hermaphrodites and tra-1(q88) XX males, which are fertile and make yolk. Complex rearrangement of tra-1. Reference: Zarkower et al. (1994) PMID: 7520378

Weakest known fem-3 mutation. Viable non-temperature-sensitive self-fertile XX hermaphrodites. e1999 XO males are slightly feminized, sometimes male-fertile. Reference: Hodgkin (1986) PMID: 3770465.

eIs2137 [sup-7(+) + Dm-hsp::lacZ] IV. lacZ expression induced by heat shock. Limited pattern (the pSHZ1 vector was originally designed for use in Drosophila, not C. elegans, and is not the best vector for expression of lacZ in the worm). This strain has predominantly historical value (as the first C. elegans strain shown to express a foreign gene). eIs2137 transgene is integrated and contains two plasmids: pAST (sup-7 amber suppressor), and pSHZ1 (lacZ driven by Drosophila heat shock promoter (S. Munro)).

Heterozygotes are WT and segregate WT and DpyUnc. 1/3 of the WT are fem-2 homozygotes. Homozygous fem-2 animals are hermaphrodites if mother was heterozygous for fem-2, and are fertile females if mother was homozygous for fem-2.

Temperature sensitive. Sterile at 25C. Maintain at 15C. Do not distribute this strain; other labs should request it from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects. [2/98: Craig Mello noticed a different embryonic phenotype in this strain as compared to the e2141 stock that Jim Priess obtained from England-the ABp fate appears WT.] [NOTE (11/16/10 - J. Hubbard): This strain is NOT synonymous with glp-1(e2144) as previously reported in Kodoyianni V, Maine EM, Kimble J. (1992) [Molecular basis of loss-of-function mutations in the glp-1 gene of Caenorhabditis elegans. Mol Biol Cell. 3,1199-213. PMID: 1457827]. As reported in Worm Breeders Gazette December 2010; 18(3), e2144 carries the mutation c2785t in exon 8, leading to the amino acid change L929F, whereas e2141 carries the mutations c2920t and a3610g in exon 8, leading to the amino acid changes R974C and T1204A.]

e2008 recessively suppresses the phenotypes of mutations in unc-54(r293), lin-29(n546), tra-2 and dpy-5. Abnormal male tail. smg-2 homozygotes have slightly abnormal movement.

Phenotypically wildtype XX hermaphrodite at 20C; poor viability and fertility at 25C. Rare XO animals are hermaphrodite due to suppression of amber mutation e2115 and consequent transformation of XO due to tra-2(e2046) gain-of-function. Reference: Hodgkin & Albertson (1995) PMID: 8647390.

Self-fertile intersexual XX animals. Tra-3 masculinized phenotype suppressed by egl-26 mutation. Reference: Hodgkin (1986) PMID: 3770465.

From CB1490, which is a double mutant of him-5 with ali-1. CB4088 has been outcrossed to remove ali-1.

Anterior displacement of rays and fan. Ray identities are not altered. Slightly Unc (coiler).

Animals with the Dup are WT. Animals which have lost the Dup are Unc and female. Maintain by picking WT.

sup-34 is dominant amber suppressor: weak suppression of Unc, medium suppression of Dpy.

Wildtype hermaphrodites segregating wildtype hermaphrodites and tra-1 XX males, which mate with greater efficiency than most tra-1 XX mutants. Reference: Hodgkin (1987) PMID:3428597.

Hermaphrodites have an abnormal protrusive vulva. Segregate males with abnormally swollen bursa. Suppressor of certain alleles of certain genes.

Hermaphrodites have an abnormal protrusive vulva. Segregate males with abnormally swollen bursa. ma116 is a weak recessive suppressor of certain alleles of certain genes.

Poorly growing, low self-fertility masculinized XX hermaphrodites. Weak allele of tra-2, partly suppressed to self-fertility by smg (NMD) mutation; permits efficient selection of new feminizing mutations. References: Spence et al. (1990) PMID: 2317869. Zarkower et al. (1994) PMID: 7520378.

ZZ21 lev-1(x21) tra-3(e2333) isolated by Jim Lewis as EMS-induced levamisole resistant derivative of N2. Found to carry a cryptic tra-3 allele by Jonathan Hodgkin. XX animals are viable hermaphrodites which produce 500 rather than 330 self-progeny; occasionally Egl; no other signs of masculinization.

Wild-type hermaphrodites segregating WT, Fem, Unc Mor. Maintain by picking wild-type hermaphrodites. Deletion allele of fem-1, with unusual maternal effect. Reference: Spence AM, et al. Cell. 1990 Mar 23;60(6):981-90. Johnson CL & Spence AM.. Science. 2011 Sep 2;333(6047):1311-4.

Paralyzed Unc. This strain carries a tightly linked mutation, che-3(ky1018), that changes Q1107 of che-3 to a stop codon. Reference: Larsch, et al. (2015) Cell Reports.

Wild isolate from Palm Canyon, CA. Segregated to remove gro-1(e2400) [CB4512]. Caenorhabditis elegans wild isolate CB gro-1(+) subclone of PaC1 (Tc1 pattern IV). For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Slow growing. Homozygous gro-1(e2400) derived from PaC-1 (CB4507). Caenorhabditis elegans wild isolate CB subclone of PaC1 (Tc1 pattern IV?)].

Wild isolate from Pasadena, Ca. [Flower bed on CIT campus in summer of 1971 (or 1973??). Wild type phenotype. High copy Tc1. Reference WBG 10(2) 140-141. Caenorhabditis elegans wild isolate. CB subclone of PA1 (Tc1 pattern HCG?). For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Grows poorly, best at 20C. Self-fertile intersexual XX hermaphrodite due to partial suppression of weak tra-1 allele by smg-2(NMD). References: Zarkower et al. (1994) PMID: 7520378. Hodgkin (1987) PMID:3428597.

Unc-32 hermaphrodites segregating Unc hermaphrodites and Unc Tra homozygous XX pseudomales with variable male tails, hermaphroditic gonads and adult yolk production. Class B2 allele (male tail, sterile hermaphrodite gonad) derived by mutation of tra-(gf) allele e1575. Reference: Hodgkin (1987) PMID:3428597.

Wild-type hermaphrodites segregating wild-type hermaphrodites, Unc-24 females, Unc Dpy hermaphrodites. Maintain by picking wild-type hermaphrodites. Deletion allele of fem-1, with unusual maternal effect. Reference: Spence AM, et al. Cell. 1990 Mar 23;60(6):981-90. Johnson CL & Spence AM.. Science. 2011 Sep 2;333(6047):1311-4.

Unbalanced two-fold arrest lethal. Clone 20 - 30 WT, screen F1 for presence of mup-1 homozygotes. Easily scored, they look like tiny little croissants.

Unbalanced two-fold arrest lethal. Clone 20 - 30 WT, screen F1 for presence of mup-1 homozygotes. Easily scored, they look like tiny little croissants.

Unbalanced two-fold arrest lethal. Clone 20 - 30 WT, screen F1 for presence of mup-1 homozygotes. Easily scored, they look like tiny little croissants.

Unbalanced two-fold arrest lethal. Clone 20 - 30 WT, screen F1 for presence of mup-1 homozygotes. Easily scored, they look like tiny little croissants.

Unbalanced two-fold arrest lethal. Clone 20 - 30 WT, screen F1 for presence of mup-1 homozygotes. Easily scored, they look like tiny little croissants.

eEx24 [tra-3(+) + rol-6(su1006)]. Pick Rollers to maintain. Roller hermaphrodites producing more Rol hermaphrodites and non-Rol hermaphrodites that produce broods of 100% Tra-3 XX pseudomales. Tra-3 mutant rescued by transgenic tra-3(+); useful source of homozygous m+z- tra-3 XX hermaphrodites. Reference: Barnes & Hodgkin (1996) PMID: 8887539.

Small, severely uncoordinated. Spontaneous segregant from N2/RW7000 (Bristol/Bergerac) hybrid strain. Daf-d.

Wild type-slightly Unc. Tc1 pattern high copy; different from RW7000. Bergerac isolate obtained by S. Brenner from Brun group. Caenorhabditis elegans wild isolate. CB subclone of Bergerac N62 (Tc1 pattern HCB). To obtain ECA243, a sequenced isolate of this wild strain, or other whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Wild type. Low Tc1 copy number; pattern X. [Obtained from Rothamsted by S. Brenner as 'Panagrellus redivivus'. Cross fertile with C. elegans N2.] Caenorhabditis elegans wild isolate. CB subclone of N3 (Tc1 pattern X). For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Isolated from Carl Johnson's organic garden in Altadena, CA in 1974. Wild type. Low copy Tc1; pattern III. Caenorhabditis elegans wild isolate. CB subclone of GA-12 (Tc1 pattern III). To obtain ECA245, a sequenced isolate of this wild strain, or other whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Isolated from Carl Johnson's organic garden in Altadena, CA in 1974. Wild type. Low copy Tc1, pattern V. Caenorhabditis elegans wild isolate. CB subclone of GA-9 (Tc1 pattern V). For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

NOTE: Whole-genome analysis indicates that this stock is genotypically CB4858. Users interested in this strain are encouraged to obtain a verified CB4855-derivied strain. To obtain ECA247, a sequenced isolate of this wild strain, or other whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org). Isolated from compost in Palo Alto, CA in 1982(?). Wild type (plg-1(e2001)). Low copy Tc1, pattern VI. Caenorhabditis elegans wild isolate CB subclone of Sta-5 (Tc1 pattern VI). Original stock isolated by T. Doniach.