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The effect of modifier alleles A and B
| Modifier genotype | Phenotype trait |
|---|---|
| AA | Exclusively asexual reproduction |
| Aa | Exclusively asexual reproduction |
| aa | Facultative sexual reproduction |
| BB | Infinite clonal life span |
| Bb | Infinite clonal life span |
| bb | Finite clonal life span (cell senescence) |
