PQN-41C promotes linker cell death. (A) pqn-41 genomic region. Alternative exon b is labeled with the letter “b”. GFP not to scale. (B) Three mRNAs generated by the pqn-41 region. (C) Predicted protein structures for mRNAs in (B). (D) Linker cell survival in pqn-41(ns294) mutants expressing the indicated cDNAs. Numbers, percentages. Error bars, SEM. *, different from pqn-41(ns294), p<0.0009, n=138. **, p<0.0007, n=236. ***, p<0.004, n=229.