1.1kb internally deleted P element. Deleted for bp 809 to bp 2563, with a 2bp ambiguity due to duplicate sequences at the deletion breakpoints.
P{KP}2F represses the P\TCP.hs transposase activity encoded by H{hsp/CP}2; the rate of snw mutation (in the absence of heat shock) in the male germline caused by H{hsp/CP}2 is reduced if P{KP}2F is present. P{KP}2F represses the transposase activity of P{Δ2-3}99B in the germline; the rate of snw mutation in the male germline caused by P{Δ2-3}99B is reduced if P{KP}2F is present.
Three independent insertions of this element behaved differently in snw mutability and gonadal dysgenesis tests, indicating that site of insertion into the genome may play a role in defining these different activities.