Table 1. Drosophila pseudoobscura strains isochromosomal for the third chromosome.
| Arrangement | Strain ID | DSSC | Sampling location | Balancer chromosome |
|---|---|---|---|---|
| Arrowhead | AR DM1005 | 14011-0121.224 | Davis Mountains, TX | Lobe |
| Arrowhead | AR KB945 | 14011-0121.237 | Kaibab Natl. Forest, AZ | Lobe |
| Arrowhead | AR MSH126 | 14011-0121.230 | Mount St. Helena, CA | Lobe |
| Chiricahua | CH JR272 | 14011-0121.258 | James Reserve, CA | Blade |
| Chiricahua | CH KB888 | 14011-0121.253 | Kaibab Natl. Forest, AZ | Lobe |
| Chiricahua | CH MSH202 | 14011-0121.254 | Mount St. Helena, CA | Blade |
| Cuernavaca | CU SPE123 1.2 | 14011-0121.271 | San Pablo Etla, Mexico | Blade |
| Cuernavaca | CU SPE123 4.1 | 14011-0121.272 | San Pablo Etla, Mexico | Blade |
| Cuernavaca | CU SPE123 5.2 | 14011-0121.273 | San Pablo Etla, Mexico | Blade |
| PikesPeak | PP DM1049 | 14011-0121.241 | Davis Mountains, TX | Blade |
| PikesPeak | PP DM1054 | 14011-0121.242 | Davis Mountains, TX | Lobe |
| PikesPeak | PP DM1065 | 14011-0121.243 | Davis Mountains, TX | Lobe |
| Standard | ST JR138 | 14011-0121.251 | James Reserve, CA | Lobe |
| Standard | ST MSH177 | 14011-0121.246 | Mount St. Helena, CA | Blade |
| Standard | ST MSH49 | Mount St. Helena, CA | Lobe | |
| TreeLine | TL SCI 12.2 | 14011-0121.265 | Santa Cruz Island, CA | Blade |
| TreeLine | TL SPE123 7.1 | 14011-0121.269 | San Pablo Etla, Mexico | Blade |
| TreeLine | TL SPE123 8.1 | 14011-0121.270 | San Pablo Etla, Mexico | Blade |
Each strain is descended from a single individual collected from the wild. Wild-caught flies were crossed and backcrossed with laboratory strains carrying nonrecombining balancer third chromosomes to create lineages isochromosomal for the third chromosome. All strains are available at the Drosophila Species Stock Center (DSSC) (San Diego).