Yale Environment 360: An analysis of sequenced polar bear genomes provides new insights into how climate change and interbreeding with brown bears led to the evolution of the modern-day polar bear. In an analysis of the nuclear genomes of 28 brown, black, and polar bears, an international team of researchers found evidence that polar bear populations fluctuated with climate shifts over the last million years, with populations increasing during cooler periods and declining during periods of warmer temperatures. Their findings...
URL: http://e360.yale.edu/digest/evolution_of_polar_bear_followed_changes_in_climate_study_says/3559/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+YaleEnvironment360+%28Yale+Environment+360%29
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