Regressive evolution is another term that you see a lot . talk ) 11 : 28, 7 October 2008 ( UTC)
2.
The eyed and eyeless forms of " A . mexicanus, " being members of the same species, are closely related and can interbreed making this species an excellent model organism for examining convergent and parallel evolution, regressive evolution in cave animals, and the genetic basis of regressive traits.
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