| Parameter | Meaning | Lower limit | Upper limit |
|---|---|---|---|
| Contribution to inactivation of B by A to A-directed B inactive state | 0.1 | 10 | |
| A/A’ add-off ratio | ; the factor by which A is more effective at inactivating B alleles to A-directed inactive state than A’ to A’-directed inactive state | 0.1 | 10 |
| A/A’ B-activation ratio | ; factor by which the activation rate of B is lower in the A’-directed B inactive state than in A-directed B inactive state | 0.1 | 10 |