| Primary Identifier | MGI:1857955 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Apex1 |
| Transmission | Germline | Strain of Origin | 129X1/SvJ |
| Is Recombinase | false | Is Wild Type | false |
| description | Homozygous mutant embryos proceed to embryonic day 6.5 - 7 with normal morphology and can be genotyped by PCR from day 9.5 embryo stages before their lethality. Pre-implantation blastocysts are gamma ionizing radiation sensitive (J:50702). |
| molecularNote | Exon 2, intron 2, exon 3 and part of intron 3 were replaced by a neomycin resistance cassette. |
