Identifying the fish species present in a river based on traces of their DNA

PHYSorg
Dec 5, 2023, 3:36 pm98 pts
As they swim around, fish leave DNA fragments behind them, for example via their skin or their excrements. Once collected and analyzed, these indicators allow scientists to determine all the species present in the environment. What's more, the method is precise, simpler and less harmful to the fish than the…

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