||csr-1(fj54) IV/nT1 [qIs51] (IV;V).
|| C. elegans
||Heterozygotes are WT and GFP+. csr-1 homozygotes are basically sterile, but some of them occasionally lay a small number of dead eggs. The fj54 mutation deletes a 524 bp region including half of the second exon, the third exon, and almost all of the fourth exon, causing a frame shift to stop the translation of both PAZ and Piwi domains. The deletion can be checked by PCR with the following primers: AAGAAATACCAATGCGGAGGCA and TTCACGGCTCTTTGCAGTTTCA. Homozygous nT1[qIs51] inviable.