Genetics
The Ossetians are a unique ethnic group of the Caucasus, being the only people found on both the north and south slopes of the mountain, also speaking an Indo-European language surrounded by Caucasian ethnolinguistic groups. The Y-haplogroup data indicate that North Ossetians are more similar to other North Caucasian groups, and South Ossetians are more similar to other South Caucasian groups, than to each other. Also, with respect to mtDNA, Ossetians are significantly more similar to Iranian groups than to Caucasian groups. It is thus suggested that that there is a common origin of Ossetians from Iran, followed by subsequent male-mediated migrations from their Caucasian neighbours
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