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Enter your PIN http://ptodirect.com/info/stmap_84100.html?paxil.viagra.dipivoxil effects kamagra jelly Dolphins and bats don't have much in common, but they share a superpower: Both hunt their prey by emitting high-pitched sounds and listening for the echoes. Now, a study shows that this ability arose independently in each group of mammals from the same genetic mutations. The work suggests that evolution sometimes arrives at new traits through the same sequence of steps, even in very different animals. The research also implies that this convergent evolution is common但����and hidden但����within genomes, potentially complicating the task of deciphering some evolutionary relationships between organisms.����
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