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Dice's similarity coefficient (S) between susceptible and resistant strains of Biomphalaria alexandrina snails.
| OPA-2 | OPB-18 | OPC-11 | OPD-10 | OPD-18 | |
|---|---|---|---|---|---|
| Number of shared bands (a) | 2 | 2 | 3 | 2 | 1 |
| Number of bands in susceptible not in resistant strain (b) | 1 | 1 | 1 | 1 | 2 |
| Number of bands in resistant not in susceptible strain (c) | 3 | 3 | 4 | 1 | 3 |
| Similarity coefficient (S) | 50% | 50% | 55% | 66% | 29% |
S = 2a/2a + b + c.
