Discovery of oldest human DNA in Spanish cave sheds light on evolution

Scientists say DNA strands in thigh bone of 400,000-year-old early human can help build clearer picture of human family tree 

   

The Guardian, Ian Sample, science correspondent, Wednesday 4 December 201 

An artist's impression of the Sima de los Huesos early humans that are
estimated to have lived 400,000 years ago. Photograph: Kennis & Kennis/AP

Researchers have read strands of ancient DNA teased from the thigh bone of an early human who died 400,000 years ago in what is now northern Spain.

The genetic material was pieced together from a clutch of cells found in bone fragments – the oldest human remains ever to yield their genetic code.

The work deepens understanding of the genetics of human evolution by about 200,000 years, raising hopes that researchers can build a clearer picture of the earliest branches of the human family tree by studying the genetic make-up of fossilised remains dug up elsewhere.

"This is proof of principle that it can be done," said Matthias Meyer at the Max Planck Institute for Evolutionary Anthropology in Leipzig. "We are now very eager to explore other sites of a similar age."

The thigh bone was among the remains of at least 28 early human ancestors found at the bottom of a vertical shaft in a cave complex in the Atapuerca mountains in northern Spain. The Sima de los Huesos, or "pit of bones", lies 30 metres underground and half a kilometre from the cave system's nearest current entrance.

Scientists managed to analyse DNA found
 in the thigh bone of this skeleton found in
Spain. Photograph: Javier Trueba/AP

The individuals at Sima de los Huesos looked a little like Neanderthals, and many anthropologists classified them as Homo heidelbergensis, a potential forerunner of modern humans. The corpses were probably washed into the pit rather than buried intentionally.

Meyer's team sequenced DNA found in tiny sausage-shaped structures called mitochondria, which sit inside cells and provide them with power. Mitochondria are passed down the maternal line only, unlike DNA found in the cell nucleus, which carries genetic information from both parents and their ancestors.

The age of the bone fragments meant the cells and their DNA were badly degraded. "This is the hardest sample I have ever worked on that yielded a result," said Meyer.

Meyer's team dated the bone fragments to 400,000 years old, but further analysis left them baffled. The mitochondrial DNA did not match that of Neanderthals, but was closer to a sister group called the Denisovans that lived in Siberia. Details of the study appear in the journal Nature.

Meyer says there are a number of explanations, but admits more work is needed. One possibility is that an older lineage of human ancestors, perhaps Homo erectus, bred with the ancestors of the Sima de la Huesos individuals, and passed on their mitochondria. But several other explanations are being explored by anthropologists."Either way, this new finding can help us start to disentangle the relationships of the various human groups known from the last 600,000 years," said Chris Stringer, head of human origins at the Natural History Museum in London. "If more mitochondrial DNA can be recovered from the Sima population of fossils, it may demonstrate how these individuals were related to each other, and how varied their population was."

Meyer said the Leipzig group now hopes to extract so-called nuclear DNA from the Sima fossils, which contains more information but will be much harder to extract because there is far less material.

"We have taken a first glimpse now and what we find is unexpected and confusing," he said. "But I'm confident we'll get more data, and then it's very likely we'll be able to nail down some hard facts, about whether these Sima de la Heusos guys are the ancestors of Neanderthals, the ancestors of both Neanderthals and Denisovans, or even something completely different."

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"The Timing of Creation"– Aug  12, 2012 (Kryon Channelling by Lee Caroll) - (Text version)

“…. The First Look

About 200,000 years ago is when it literally began. The concept of the "divine seeding" of planet Earth happened at that point, and the fields metaphorically started to be ploughed. There is an issue and we're going to call it the way species work with Gaia. This is something that happened simultaneously with the grid creation of Gaia. For now we give you something that no one has thought about. When we speak of the grids of the planet, you make an assumption that these grids always existed on the planet. For the planet is old and you might say, "Well the grids have always been there." But I'm here to tell you that only one was always there, and that's the magnetic grid. But it was spiritually void. That is to say, it only had that which was created from the Earth's core movement. Today, when we talk about the grids of the planet, our conversation involves the consciousness of humanity, which is imbued upon the magnetic grid. We also tell you about the Crystalline Grid and about the Grid of Gaia consciousness. Both of these react to Human compassion.

Now, here is the puzzle: If you don't have divine Human consciousness, then what about the grids? Do they exist without the Human Being? The answer is that they needed to be created simultaneously with the seeding of divine DNA. So what the Pleiadians did was not only to start the seeds of humanity's change into divine DNA, but they created the conscious grids of Gaia as well. They had to, for the conscious grids of Gaia are a confluence of humanity's decisions brought to Gaia's energy. The consciousness that we are talking about is the spiritually sanctioned Human Being that exists with a piece of God inside him, and with DNA that has 23 chromosomes instead of the common 24 that all the others have through biological evolution.

Let us back up and say it again and make it simpler, my partner [admonition to Lee to speak more plainly]. The triad of grids on this planet that we have spoken of over and over are the consciousness grids of Gaia, and were created at the same time as the seeding of humanity with Pleiadian DNA. For all the teachings we've been giving, especially about the Crystalline Grid, these grids have been reacting to Human consciousness and compassion. Therefore, the very essence of the current Gaia energy is also related to the creation of humanity.

These are the attributes of the Pleiadians work 200,000 years ago, and it was done quantumly in ways that you have no conscious awareness of at the moment. For these things are beyond your ability to understand right now, since you are still in a single-digit dimensionality. But the result back then was "a conscious Gaia." So you might say Gaia itself was actually created quantumly from the Seven Sisters energy, just like you.

The Gaia that existed before then was still Gaia, but not as it is now. It was a Gaia that was creating the dirt on the earth and the energy of biological life of the earth. It was the mother of all life on the planet, but not a Gaia that responded to Human consciousness. That's very different. So Gaia greatly expanded when the Pleiadians came, and that was by design.

It took 110,000 years for this to settle itself, and for the ground to be ready for more than 16 species of Human Beings to leave so that only one was left. When that occurred at approximately 90,000 years ago is when you can start calibrating who Humans were and who they became.

The Others

Now, what about all of those other types of Humans, and how did they leave? I'm  going to give you an attribute of something that exists even today. This is difficult for my partner, for he has not heard this before. This information has not been brought in this fashion before. Go slowly, my partner.

The variety of species on this planet comes and goes accordingly as they are needed for the energy they create. So one of the tasks of Gaia is to create and eliminate species. When they are no longer needed for the purpose of Gaia's development, they cease to exist and they die out. If new life is necessary, if new concepts of life are needed, Gaia is cooperative and they are then created. The actual creation of species is something that environmentalists have not clearly seen. That is to say the mechanics of how it works is not fully recognized as something that is strongly coordinated with your weather. But you have already seen the mechanics of some of this in your long-term studies, for you have already noted the coming and going of many species through the ages. It's ongoing.

The Appropriateness of the Elimination of Species

Now, along come Humans and they see all this coming and going of living things, but they want to save them all - all the species that exist. For in their linear mind, all species should remain and exist, since they are here. The attribute of Gaia, however, is to eliminate them, cull them out, to bring in new ones. I just gave you the mechanics of the reasons species come and go. It's appropriate and is a natural building process for new species.

When the Pleiadians started to create the grids of the planet, Gaia cooperated in what was to come, knew the purpose, and what was needed for survival of this new spiritual Human. Gaia knew this since the energy of Gaia had seen it before [reason given below]. So the old attribute, which needed many kinds of Human Beings, slowly died out. It was natural. There was not a war. There were no horrible plagues. There were no volcanoes or tsunamis that consumed them. Through attrition, appropriateness, and 110,000 years, they disappeared.

So approximately 110,000 years ago, there was only one kind left, and this is science, for everything that you study will bear this out, and anthropologists have already seen it and have asked, "What happened back then at this time that would have eliminated these other kinds of Human variety?" It's a puzzle in science that I have just answered, for science looks only for physical events as triggers. But instead, it's the marriage of Gaia consciousness that you call "Mother Nature," which facilitated this. It's the same today when you see a variety of species diminish as Humans take over a greater portion of the earth. I'll call this "the appropriate elimination of unique life forms, which allow for the growth of global awareness and quantum evolution." Some species only exist to allow others to climb the ladder of nature, then they disappear. Gaia knows what the ladder looks like. You don't. ... ”

"The Big Picture - You Are Not Alone" - Feb 2012 (Kryon Channelling by Lee Caroll) - (Text version)