Human Genetic History

Human Genetic History and Denisova CaveAs more and more people have their genetic history analyzed to find out where their ancestors came from, interest has increased in the origins of human genetic history. There has been a lot of speculation on this question, and some skeptics have tried to claim that the Genesis account is incompatible with the human genome, and particularly with the very early specimens of ancient humans including Denisovans and Neanderthals.

Science News (June 8, 2019) published an interesting article by Bruce Bower about recent finds of these hominids and how they may fit into human genetic history. The first point we want to make is that the Bible has an economy of language on this subject. We do not know anything about the appearance of Adam and Eve or their offspring from the biblical account. We don’t know when they lived, or where they went as they left the Fertile Crescent where they were created. People whose denominations have established a doctrinal view on these questions do so with no biblical support.

Recent finds of the Denisovans in the Tibetan Plateau show that great migrations had taken place because the name “Denisovan” comes from the original discoveries made in Siberia’s Denisova Cave (shown in picture). Anthropologists have also found remains of the Denisovans in China. Modern humans in Asia, Melanesia, Australia, and Papua New Guinea have some Denisovan DNA. In fact, these populations show protein sequences which are more closely related to the Denisovans than the Neanderthals.

There is an old battle that has been going on among scientists for at least the last 100 years. It’s the battle between the “splitters” and the “lumpers” and how they handle human genetic history. The splitters are those who tend to put a new species identification on every new find. In this case, they have identified each of these groups as being independent of each other, so Denisovans, Neanderthals, and modern humans are each classified as a different species. The lumpers tend to say these are all variations in the original DNA, and they must all be one species since they can and did interbreed.

The biblical account takes a “lumpers” view on this question. There is more support for that view as we see evidence of ancient people doing all the things we do and finding segments of their genetic makeup in our own genome. If modern anthropologists found the skeletons of Adam and Eve, it’s hard to imagine how they would fit them into human genetic history. They certainly lived before all of the racial variations.
— John N. Clayton © 2019