The lethality of the original insertion chromosome may or may not be caused by this allele.
Deficiency complementation analysis is consistent with the lethality of the line being associated with the insertion. The insertion maps within the clumsy transcription unit. However, since the insertion lies within a gene-rich region, the lethality can not yet be conclusively mapped to a single gene from these results. Thus l(2)SH1386SH1386 (representing the lethality of the chromosome) has been kept as a separate allele in FlyBase for now.