How Evolution Copies Itself

by Elizabeth Pennisi
Science – A tiny fish is helping to answer a big question about evolution. The threespine stickleback (Gasterosteus aculeatus) has long been abundant in the sea. But after glaciers melted 10,000 years ago, many wound up in new freshwater lakes and streams. In these unfamiliar environments, the fish lost their bony plates and spines and developed novel behaviors and physiology. A new study reveals that many of these relatively rapid changes were due not to mutations in specific genes, as some biologists had long assumed, but rather to changes in the activity of these genes. The finding should help focus more attention on the role of gene regulation in evolution, not just of fish but of all organisms, including humans….. >>Read More<<

Source and Photo: Science, April 4th, 2012
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One response to “How Evolution Copies Itself

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