Mutator strain. Throws males. See WBG 14(2): 24. Strain has a ts phenotype: dies out at 25C, grows at 20C, but best kept at 18-20C. Not known whether it is the mut-7 allele that is ts or something else.

ccEx7271 [let-858::GFP + pha-1(+)]. This strain expresses nuclear-localized GFP in all somatic nuclei, but reduced or no GFP in germ cells. If maintained at 20C, pha-1(ts) genotype will select for transgenic animals. Germ cell expression can be observed when maintained at 25C. Germline transgene silencing is abnormal.