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

What Good Are Termites?

What Good Are Termites? Termite Mound

We have had the great pleasure of presenting our lectureships in Australia. One of the common questions from college groups has been, “What good are termites?” The termite mounds in some places we saw were over 10 feet (3 m) tall. People frequently complained that they couldn’t build structures out of wood. There were so many termites that the wood didn’t last long enough to make it cost effective.

Science News
(February 16, 2019, page 4) carried an interesting article about termites. Kate Parr is a tropical ecologist from the University of Liverpool in England conducting research for the university and the Natural History Museum in London. She has been examining how ants and termites affect the decomposition and consumption of organic material in rainforests.

As they conducted their study, the research area went through a drought. During the drought, termite numbers doubled, and decomposition rates increased dramatically. They found that during the drought in areas where termites were not disturbed, and their numbers increased there was a greater amount of soil moisture, more nutrient mixing, and better seedling survival rates. Areas where the termites had been eliminated had massive die-offs of plants which affected the animal population. In times of normal moisture with no drought conditions, there was no difference in all these variables. What good are termites? It seems apparent that the termites allowed life to prosper during droughts. In places like the Australian outback, the presence of termites is apparently vital for the avoidance of drought die-offs.

One aspect of design in the cosmos is the fact that there always seem to be animals that serve a unique roll in an area when destructive agents threaten the balance of the ecology. The role of insects and small life-forms in the existence of life on Earth is an area that is very understudied. But new discoveries are coming fast and furious as we see the designs of God allowing life to exist even under the most severe environmental conditions.

–John N. Clayton © 2019