A G to A alteration at the first nucleotide of the third intron.
Nucleotide substitution: G?A.
G20315304A
G?A
G to A mutation in the third intron splice donor site.
alphaSnap[+]/αSnapl65 is an enhancer of short lived | heat sensitive phenotype of comt1
Selected as: a mutant that is lethal in trans to Df(3L)rdgC-co2.