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Mutation tests in vitro comparing T4 and RB69 DNA polymerases
| Type of DNA polymerase | Total plaques | Mutant plaques | Mutants per 104 progeny |
|---|---|---|---|
| Forward mutation | |||
| T4 | 68,200 | 34 | 5.0 |
| RB69 | 127,200 | 39 | 3.1 |
| Reversion | |||
| T4 | 1,900,000 | 30 | 0.16 |
| RB69 | 2,300,000 | 15 | 0.064 |
