The latest study on the matter is unfortunately paywalled by Elsevier... until March this year. You can read the abstract here: "The Combined Landscape of Deni

The latest study on the matter is unfortunately paywalled by Elsevier... until March this year. You can read the abstract here: "The Combined Landscape of Denisovan and Neanderthal Ancestry in Present-Day Humans" https://www.ncbi.nlm.nih.gov/pubmed/27032491 https://www.ncbi.nlm.nih.gov/pubmed/27032491 And here is the global map of Neanderthal and Denisovan DNA it contains: https://i.imgur.com/SjrzV93.jpg https://i.imgur.com/SjrzV93.jpg The figure legend reads: Figure 2. Variation in Denisovan Ancestry Proportion (A) Proportion of the genome inferred to be Denisovan in ancestry in diverse non-Africans. The color scale is not linear to allow saturation of the high Denisova proportions in Oceania (bright red) and better visualization of the peak of Denisova proportion in South Asia. (B) Proportion of the genome confidently inferred to be Denisovan in ancestry in mainland Eurasians plotted against the rate of allele sharing of each sample with non-West Eurasians as measured by an f4 statistic. Error bars (1 SE) were obtained from a block jackknife. The Denisovan ancestry estimates in South Asians are systematically above expectation (fitted trend line) (p = 0.0013).