27 Apr
“She was here, I can smell her DNA!”
As biotechnology advances and the methods to detect and analyse DNA are more sensitive and accurate, scientists have found a new twist to the power of DNA. A recent paper in Biology Letters reports that it has been possible to detect the presence of the invasive frog American bullfrog (Rana catesbeiana) in ponds by measuring subtle amounts of its DNA in water samples.
The experiments showed that it is possible to discover whether a pond has been taken by these frogs, but also the method allows to have a rough idea of the level of invasion by providing three possible results, zero, low or high.
