pkIs2084 [col-10::LacZ::lin-41 + goa-1::GFP]. Heterozygous. pash-1(pk2083)/+ heterozygotes look wild-type and will segregate pash-1(pk2083)/+ heterozygotes, sterile pk2083 homozygotes, and wild-type. Pick wild-type heterozygotes and check for segregation of sterile progeny to maintain.