Schematic phylogenetic tree of mtDNA haplogroup J1c. Only the Ashkenazi lineages are shown in full detail; the distribution of other lineages is indicated using small squares for each subclade with the number present in the full tree given in each case. For the full tree see Pala et al. Time scale (ka) based on ML estimations for mitogenome sequences. 
Haplogroup J comprises 7% of the Ashkenazi control-region database. Around 72% of these can be assigned to J1c, now thought to have arisen within Late Glacial Europe, and 19% belong to J1b1a1, also restricted to Europe. Thus &gt;90% of the Ashkenazi J lineages have a European origin, with ~7% (J1b and J2b) less clearly associated. Many have a probable west/central European source, despite (like H) being most frequent in eastern Ashkenazim. The four Ashkenazi J mitogenomes, in J1c5, J1c7a1a and J1c7d, once again show a striking pattern of Mediterranean, west and central European lineages enclosing Ashkenazi/east European ones.
Marta D. Costa,	Joana B. Pereira,	Maria Pala,	Verónica Fernandes,	Anna Olivieri, Alessandro Achilli,	Ugo A. Perego,	Sergei Rychkov,	Oksana Naumova,	Jiři Hatina,	Scott R. Woodward,	Ken Khong Eng,	Vincent Macaulay,	Martin Carr,	Pedro Soares,	Luísa Pereira	&amp; Martin B. Richards
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Marta D. Costa et al. A substantial prehistoric European ancestry amongst Ashkenazi maternal lineages. Nature Communications 4, Article number: 2543 doi:10.1038/ncomms3543 <a rel="nofollow" class="external free" href="http://www.nature.com/ncomms/2013/131008/ncomms3543/full/ncomms3543.html">http://www.nature.com/ncomms/2013/131008/ncomms3543/full/ncomms3543.html</a>