| Primary Identifier | MGI:6415707 | Allele Type | Targeted |
| Attribute String | Conditional ready, No functional change | Gene | Per1 |
| Transmission | Germline | Strain of Origin | (129X1/SvJ x 129S1/Sv)F1-Kitl<+> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Exons 2 through 8 were floxed.The neomycin selection cassette was removed with Flp recombinase. |