 As the glaciers receded from about 16,000–13,000 years ago, Europe began to be slowly repopulated by people from refugia, leaving genetic signatures.Some Y haplogroup I clades appear to have diverged from their parental haplogroups sometime during or shortly after the LGM.Haplogroup I2 is prevalent in the western Balkans, as well as the rest of southeastern and central-eastern Europe in more moderate frequencies.