| Primary Identifier | MGI:7484531 | Allele Type | Endonuclease-mediated |
| Attribute String | Modified regulatory region | Gene | Rr420 |
| Strain of Origin | Not Specified | Is Recombinase | false |
| Is Wild Type | false |
| molecularNote | CRISPR-cas9 mediated recombination replaced the regulatory sequence (TGCGGT) with AGATCT. |