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Not guarantee, but it is rather helpful. It is not too likely that two population split by a solid geographic barrier would not begin to speciate. To not speciate they would have to not have any beneficial mutations over time that would carry their gene pools apart. Then there is the possibility of founder effect by having the frequency of alleles vary between the two populations in a random manner. So, not guarantees, but even modern ring species vary greatly enough that at the ends of the ring they are different species. ( Google ring species )

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Tiara Lebsack

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13y ago

Not guarantee, but it is rather helpful. It is not too likely that two population split by a solid geographic barrier would not begin to speciate. To not speciate they would have to not have any beneficial mutations over time that would carry their gene pools apart. Then there is the possibility of founder effect by having the frequency of alleles vary between the two populations in a random manner. So, not guarantees, but even modern ring species vary greatly enough that at the ends of the ring they are different species. ( Google ring species )

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Q: Do geographic barriers guarantee the formation of new specie?
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