Bird guides once listed the myrtle warbler and audubon's warbler as distinct species. recently, these birds have been classified as eastern and western forms of a single species, the yellow-rumped warbler. which of the following pieces of evidence, if true, would be cause for this reclassification? a) the two forms are observed to interbreed successfully where their habitats overlap. b) the two forms live in similar habitats. c) the two forms have many genes in common. d) the two forms have similar food requirements. e) the two forms are very similar in coloration.
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Bird guides once listed the myrtle warbler and audubon's warbler as distinct species. recently, thes...
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