genome oscheius_wild_type_15 trackDb ow15_v6/trackDb.txt description Oscheius_Wild_Type_15 twoBitPath ow15_v6/ow15_v6.fa.2bit organism Oscheius tipulae wild type 15 defaultPos chrI:1..10000 scientificName O. tipulae 15 htmlPath ow15_v6/description.html groups ow15_v6/groups.txt