6.8kb deletion. Left breakpoint is 1440bp downstream of the Dvir\Sxl[[Pm]] start site (leaving Dvir\Sxl[[Pm]] and its associated first exon intact), right breakpoint is 115bp downstream of exon 2. This mutant is thus missing Dvir\Sxl[[Pe]] and its associated exon E1, as well as exon 2.