Contains multiple mutations in a dimorphic element in the first intron of bab1, relative to the "Concestor" ancestral sequence, which has been generated through comparison of 27 Drosophila melanogaster populations.
bab2Dark1 fails to complement Df(3L)babAr07 in segments A5 and A6 but complements the A3 and A4 segment phenotypes. bab2Dark1 also complements the posterior abdomen phenotypes and development of the leg tarsal segments.
Associated with: bab1[Dark1]