Read abstract, emphasis added:
Modern humans arrived in Europe ~45,000 years ago, but little is known about their genetic composition before the start of farming ~8,500 years ago. Here we analyse genome-wide data from 51 Eurasians from ~45,000–7,000 years ago. Over this time, the proportion of Neanderthal DNA decreased from 3–6% to around 2%, consistent with natural selection against Neanderthal variants in modern humans. Whereas there is no evidence of the earliest modern humans in Europe contributing to the genetic composition of present-day Europeans, all individuals between ~37,000 and ~14,000 years ago descended from a single founder population which forms part of the ancestry of present-day Europeans. An ~35,000-year-old individual from northwest Europe represents an early branch of this founder population which was then displaced across a broad region, before reappearing in southwest Europe at the height of the last Ice Age ~19,000 years ago. During the major warming period after ~14,000 years ago, a genetic component related to present-day Near Easterners became widespread in Europe. These results document how population turnover and migration have been recurring themes of European prehistory.
No. no, a thousand times no! And now, let's cite some HBD Chick interviews...
Also, I wonder how the HBDers reconcile their inbred/outbred scheme with the greater genetic heterogeneity in Southern Europe. I assume the official, Der Movement-approved, explanation would invoke heavy admixture - that the greasers are a heterogeneous mix of 50% sub-Saharan African and 50% Arab, who subsequently spent the centuries marrying their cousins, hence combining heterogeneity with being inbred. But, still, one wonders.