| Primary Identifier | MGI:3045140 | Allele Type | Targeted |
| Attribute String | Conditional ready, No functional change | Gene | Jak2 |
| Transmission | Germline | Strain of Origin | 129X1/SvJ |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The first coding exon (exon 2) was flanked by loxP sites. |