Short, blunt head. Dominant.

Small, blunt rounded nose; heterozygous e2656/+ are animals similar, XO males can mate. Molecularly and phenotypically different from sma-8(e2111).

CRISPR-engineered KO strain of haps-1 made by knock-in of tandem stop codons to the first exon of endogenous haps-1 locus. haps-1(C48B6.3) is the C. elegans ortholog of human HAPSTR1. haps-1(ljt1) is superficially wild-type when cultured at 20C, but is hypersensitive to paraquat (redox stress), MLN4924 (neddylation inhibition), and camptothecin (genotoxic stress). Reference: Amici DR, et al. Proc Natl Acad Sci U S A. 2022 Jul 5;119(27):e2111262119. doi: 10.1073/pnas.2111262119. PMID: 35776542.