Genotype distribution of offspring from intercrosses of heterozygous mice in different genetic backgrounds
| Strains . | Generation . | +/+ . | +/− . | −/− . | χ2 test (P) . |
|---|---|---|---|---|---|
| C57BL/6J and 129P2 | F2 | 70 | 131 | 63 | > .5 |
| C57BL/6J | N6-N8 | 57 | 106 | 16 | < .001 |
| E18.5 in C57BL/6J | N6-N8 | 24 | 52 | 18 | > .4 |
| 129/SvImJ | N8-N11 | 33 | 65 | 10 | < .001 |
| DBA/2J | N8-N10 | 42 | 94 | 24 | < .01 |
| A/J | N10 | 22 | 39 | 23 | > .7 |
| Strains . | Generation . | +/+ . | +/− . | −/− . | χ2 test (P) . |
|---|---|---|---|---|---|
| C57BL/6J and 129P2 | F2 | 70 | 131 | 63 | > .5 |
| C57BL/6J | N6-N8 | 57 | 106 | 16 | < .001 |
| E18.5 in C57BL/6J | N6-N8 | 24 | 52 | 18 | > .4 |
| 129/SvImJ | N8-N11 | 33 | 65 | 10 | < .001 |
| DBA/2J | N8-N10 | 42 | 94 | 24 | < .01 |
| A/J | N10 | 22 | 39 | 23 | > .7 |