Splice junction mutation (A680Z).
An unspecified mutation in the splice acceptor site. The splice site mutation has been arbitrarily mapped by a FlyBase curator to the first base of the splice acceptor site.
Spt5A680Z decreases eye pigmentation in males carrying P{GMroX1}60F.
Spt5[+]/Spt5A680Z is an enhancer of partially lethal | male phenotype of Df(1)52, P{w+4Δ4.3}, lncRNA:roX1ex6, lncRNA:roX1t4.9