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House finches were found only in western north america until 1939, when a few individuals were released in new york city. these individuals established a breeding population and gradually expanded their range. the western population also expanded its range somewhat eastward, and the two populations have recently come in contact. if the two forms were unable to interbreed when their expanding ranges met, it would be an example of _____.

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It would be an example of "allopatric speciation".


Allopatric speciation will be speciation that happens when two populaces of similar species end up confined from each other because of geographic changes. Speciation is a slow procedure by which populaces advance into various species. An animal types is itself characterized as a populace that can interbreed, so amid speciation, individuals from a populace shape at least two particular populaces that can never again breed with each other.

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