Fig. 2.

Schematic of 3F cluster in Drosophila melanogaster, the simulans clade species, and D. erecta. Cluster is flanked by two genes, echinus (ec) and roX1 (last green chevrons), with a TE insertion at the distal side of the locus (purple chevrons adjacent to roX1). Complex satellite monomers are indicated by blue (Rsp-like) or orange (1.688) chevrons located between the genes. Chevrons with dotted outline indicate sequences that were not annotated but were determined manually by BLAST to be highly degenerated satellite monomers. Black dotted lines between species indicate shared repeats. Although we include D. erecta as an outgroup taxon, we consider the ancestral state of this locus to be unknown given the fast turnover rate of these repeats and the divergence time between the study species and D. erecta (∼9 Ma).