A set of mutant stocks derived by insertional mutagenesis using the P-element construct P{PZ}; most lines have a lethal or sterile phenotype. The P{PZ} construct carries a ry[+] visible marker, Ecol\lacZ enhancer trap sequences, and bacterial sequences that allow plasmid rescue.
in situ data (61B1--61B2) differ from location inferred from flanking sequence (62A3); may be a problem of estimated cytology near telomere.