amorphic allele - molecular evidence
Deletion of all of the coding region of the Srr-RA transcript and most of the coding region of the Srr-RB transcript ( 3R:9365859..9367626 , FB2018_02).
Deletion of all of the coding region of the Srr-RA transcript and most of the coding region of the Srr-RB transcript ( 3R:9365859..9367626 , R6).
decreased sleep
Srrmiddle mutants show decreased sleep only during night-time.