FIGURE 1. Ratio of Neanderthal to modern human mtDNA in six hominid fossils.
From the following article:
Analysis of one million base pairs of Neanderthal DNA
Richard E. Green, Johannes Krause, Susan E. Ptak, Adrian W. Briggs, Michael T. Ronan, Jan F. Simons, Lei Du, Michael Egholm, Jonathan M. Rothberg, Maja Paunovic & Svante Pääbo
Nature 444, 330-336(16 November 2006)
doi:10.1038/nature05336
For each fossil, primer pairs that amplify a long (119 base pairs; upper lighter bars) and short (63 base pairs; lower darker bars) product were used to amplify segments of the mtDNA hypervariable region. The products were sequenced and determined to be either of Neanderthal (yellow) or modern human (blue) type.