So well-preserved were the bones that they yielded enough DNA for sequencing, and it became Reich’s job in 2007 to analyze the DNA for signs that Neanderthals interbred with humans—a idea he was “deeply suspicious” of at the time.
To his surprise, the DNA revealed that humans and Neanderthals did interbreed in their time together in Europe.
Today, surprisingly, the people carrying the most Neanderthal DNA are not in Europe but in East Asia—likely due to the patterns of ancient human migration in Eurasia in the thousands of years after Neanderthals died out.
Since the very beginning of our species, humans have been on the move; at times they replaced and at other times they mixed with the local population, first hominids like Neanderthals and later other humans.
Reich has since converted his lab at Harvard Medical School into a “factory” for studying ancient DNA.
In your book, you write you wanted to “build an American-style genomes factory” and “make ancient DNA industrial”?
The powders are dissolved in a watery solution and the DNA is released and those are turned into a sequenceable form. »