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Life's Going Swimmingly for All-female Fish Species

An all-female freshwater fish species called the Amazon molly that inhabits rivers and creeks along the Texas-Mexico border is living proof that sexual reproduction may be vastly over-rated. Scientists said on Monday they have deciphered the genome of the Amazon molly, one of the few vertebrate species to rely upon asexual reproduction, and discovered that it had none of the genetic flaws, such as an accumulation of harmful mutations or a lack of genetic diversity, they had...

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