23-01-2016 01:36 via

For a few Alaska fish, 1964 earthquake spurred rapid evolution - Alaska Dispatch News

Alaska Dispatch News
For a few Alaska fish, 1964 earthquake spurred rapid evolution
Alaska Dispatch News
Oceanic (top) and freshwater (bottom) stickleback collected from a pond on Middleton Island show distinctions between two populations. The top fish in each pair is female (their abdomens are swollen with eggs) and the bottom is male. Courtesy Emily Lescak.and more »
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