 R1a is virtually composed only of the Z284 subclade in Scandinavia, which is only found in a single sample of a Slovenian in Eastern Europe, where the main subclade is Z282 (Z280 and M458) and there is a negligible representation of Z93 in each region other than Turkey.West Slavs and Hungarians are characterized by a high frequency of the subclade M458 and a low Z92, a subclade of Z280.Hundreds of Slovenian samples and Czechs lack the Z92 subclade of Z280, while Poles, Slovaks, Croats and Hungarians only show a very low frequency of Z92.