Mutation in sequenced strain: deletion (-31).
There is a 31 base deletion in Ir10a in iso-1, the reference sequence strain relative to homologous regions in Dsim, Dyak, and Dere. 31 bases are missing between X:11308982 and X:11308983 in iso-1. This leads to a frameshift after codon 449 and early translation termination after the addition of 27 novel amino acids.