Home News Bombs dropped on GBR highlight wider issue

Bombs dropped on GBR highlight wider issue

By Alex Pike with AAP • 23 July 2013

Four bombs have been dropped accidentally on the Great Barrier Reef by the US military. (Credit: Getty)

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Four bombs dropped on the Great Barrier Reef cause experts to question military training.

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Before species go extinct, their populations often shrink and become isolated. Healthy populations tend to have a large gene pool with many genetic variants circulating. But the path to extinction erodes genetic diversity, because a species’ gene pool shrinks as the population declines. Losing genetic diversity limits the ability of populations to adapt to threats such as disease and climate change.