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2018-03-08. Why does evolution sometimes repeat itself? Spider-eating spiders may hold the answer.

posted Mar 11, 2018, 1:51 PM by Alan Gould
By Elizabeth Pennisi, Science. For GSS Losing Biodiversity chapter 3. Excerpt: Discovering something for the second time might sound like a letdown. Not for ecologists in Hawaii, who have found that spider-eating spiders on four islands there independently evolved the same colors: gold, black, and white. This rare example of parallel evolution, which has also been seen in one other Hawaiian spider, could help clarify one of biology’s biggest mysteries: how and when evolution repeats itself.... http://www.sciencemag.org/news/2018/03/why-does-evolution-sometimes-repeat-itself-spider-eating-spiders-may-hold-answer