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According to an IFL Science report, the Jomon, a group of hunter-gatherers who lived in what is now Japan between 16,000 and 3,000 years ago, had less Denisovan ancestry than other East Asians. The Denisovans were an archaic group of humans, first identified through bones discovered in Siberia's Denisova Cave, who lived in Asia between about 200,000 and 40,000 years ago. Today, people living in Oceania and islands in Southeast Asia have generally inherited about four percent of their DNA from the Denisovans. To learn more about how Denisovan genes spread through these populations, Jiaqi Yang of the Max Planck...

During the last Ice Age, modern humans had ongoing encounters with more than one variety of now-extinct Pleistocene-era hominin.Those encounters, according to new research, not only resulted in interbreeding between homo sapiens and other types of archaic humans -- they may have helped some of the earliest arrivals in North America survive...The earliest arrival of anatomically modern humans in North America has been a subject of intense debate for several decades. Increasingly with time, discoveries by archaeologists have continued to push back the time scales on when those arrivals began, with initial estimates of early human dispersals into North America...

The ancestors of all modern humans split off from a mystery population 1.5 million years ago and then reconnected with them 300,000 years ago, a new genetic model suggests. The unknown population contributed 20% of our DNA and may have boosted humans' brain function...In a study published Tuesday (March 18) in the journal Nature Genetics, researchers presented a new method of modeling genomic data, called "cobraa," that has allowed them to trace the evolution of modern humans (Homo sapiens).By applying their new method to modern human DNA data published in the 1000 Genomes Project and the Human Genome Diversity Project,...

Scientists examining the genomes of West Africans have detected signs that a mysterious extinct human species interbred with our own species tens of thousands of years ago in Africa, the latest evidence of humankind's complicated genetic ancestry. The study indicated that present-day West Africans trace a substantial proportion, some 2% to 19%, of their genetic ancestry to an extinct human species – what the researchers called a "ghost population." "We estimate interbreeding occurred approximately 43,000 years ago, with large intervals of uncertainty," said University of California, Los Angeles (UCLA) human genetics and computer science professor Sriram Sankararaman, who led the...

In a genome-wide association study of 6,169 Latin American individuals, an international team of scientists identified 32 gene regions (loci) that influenced facial features such as nose, lip, jaw, and brow shape, nine of which were entirely new discoveries while the others validated genes with prior limited evidence; one of these genes appears to have been inherited from Denisovans, an extinct sister group of Neanderthals.Dr. Kaustubh Adhikari, a scientist at University College London and the Open University, and colleagues... compared genetic information from the participants with characteristics of their face shape, quantified with 59 measurements (distances, angles and ratios between...

Some people in Oceania carry up to 5 percent Denisovan DNA. Prehistoric artifacts from Denisova Cave, home of the Denisovans. Image credit: OlgaMed/Shutterstock.com Our ancient ancestors were not picky about who they got into bed with, and the echoes of this prehistoric promiscuity can still be detected in human genomes from around the world today. Listed among our early romantic conquests are the Denisovans, and researchers now believe we mated with at least three distinct populations of this long-extinct species. “It’s a common misconception that humans evolved suddenly and neatly from one common ancestor, but the more we learn the...

"It turns out that the Zeravshan Valley, known primarily as a Silk Road route in the Middle Ages, was a key route for human expansion long before that—between 20,000 and 150,000 years ago," explained Prof. Zaidner. "This region may have served as a migration route for several human species, such as modern Homo sapiens, Neanderthals, or Denisovans, which may have coexisted in this area, and our research aims to uncover who were the humans that inhabited these parts of the Central Asia and the nature of their interactions."The archaeological team excavated three areas at Soii Havzak, unearthing layers of human...

According to a Science Magazine report, Huan Xia of the Chinese Academy of Sciences and Frido Welker of the University of Copenhagen identified a Denisovan rib bone found in Baishiya Karst Cave on the Tibetan Plateau among the remains of yaks, deer, hyenas, wolves, snow leopards, golden eagles, pheasants, and bharal, an animal also known as the blue sheep. The identification of the hominin rib was made through the analysis of proteins in its collagen with zooarchaeology by mass spectrometry, or ZooMS. The amino acid sequences in the rib were determined to be a close match to those found in...

They remain one of the most elusive groups of humans to have walked on earth. Evidence from the DNA traces left by Denisovans shows they lived on the Tibetan plateau, ­probably ­travelled to the Philippines and Laos in south Asia and might have made their way to northern China more than 100,000 years ago. They also interbred with modern humans...Their DNA, which was first found in samples from the Denisova cave in Siberia in 2010, provides most of our ­information about their existence.But recently scientists have pinpointed a strong candidate for the species to which the Denisovans might have belonged....

Whether you’re a morning person has long been tied to personality, but new research suggests DNA inherited from our extinct Neanderthal cousins ups the chance we’re early risers. Our circadian rhythms—the biological clocks inside our cells that time when we sleep and wake—are linked to countless genes. Now researchers say they have found that bits of genetic code passed down to some of us from Neanderthals relate to our sleeping habits in the present day. The study was published Thursday in the journal Genome Biology and Evolution. “We’ve found many Neanderthal variants that consistently associate with a propensity for being...

A gene from Denisovans makes people predisposed to mental health issues The gene was passed down to humans about 60,000 years ago in Asia Humans having sex with a now-extinct subspecies they met in Asia some 60,000 years ago could be the reason you have depression, a new study has claimed. Researchers discovered a gene variant linked to the crossbreeding of humans and Denisovans which they believe affects our mood. Those with the variant have lower levels of zinc in the body - a nutrient which studies increasingly show is associated with mood and happiness. Scientists said SLC30A9 is the...

...we find the now inhospitable and hyper-arid zone of the southern Jordan Rift Valley was frequently lush and well-watered in the past.Our evidence suggests this valley had a riverine and wetland zone that would have provided ideal passage... out of Africa and deep into the Levant and Arabia...Our findings from sedimentary sections ranging 5 to 12 metres in thickness showed ecosystem fluctuations over time, including cycles of dry and humid environments. We also found evidence for the presence of ancient rivers and wetlands.Luminescence dating showed the sedimentary environments formed between 125,000 and 43,000 years ago, suggesting there had been multiple...

A team of paleontologists... analyzed the fossilized jawbone, partial skull and some leg bones of a hominin dated to 300,000 years ago.The fossils were excavated at a site in Hualongdong, in what is now a part of East China. They were subsequently subjected to both a morphological and a geometric assessment, with the initial focus on the jawbone, which exhibited unique features—a triangular lower edge and a unique bend.The research team suggests that the unique features of the jawbone resemble those of both modern humans and Late Pleistocene hominids. But they also found that it did not have a chin,...

When modern humans first migrated from Africa to the tropical islands of the southwest Pacific, they encountered unfamiliar people and new pathogens. But their immune systems may have picked up some survival tricks when they mated with the locals—the mysterious Denisovans who gave them immune gene variants that might have protected the newcomers’ offspring from local diseases. Some of these variants still persist in the genomes of people living in Papua New Guinea today, according to a new study.Researchers have known for a decade that living people in Papua New Guinea and other parts of Melanesia, a subregion of the...

...Before high-throughput sequencing became commonplace, the aDNA field relied on polymerase chain reaction (PCR) techniques to sequence a few specific DNA fragments. Researchers could only extract a very limited amount of DNA information with this technology and had trouble distinguishing genuine aDNA from contaminant DNA.To complement advances in sequencing, aDNA researchers have also developed improved methods of DNA library construction to better reflect the characteristics of aDNA. Among these methods, partial uracil-DNA glycosylase (UDG) treatments and single-stranded DNA library construction are two of the most important...The application of aDNA technology goes far beyond the ancient human genome, of course. Paleomolecular...

Using the latest scientific methods, Tom Higham and Katerina Douka from the University of Vienna want to solve a great mystery of human evolution: Why are we the only humans left? Higham and Douka were the first ones to find a first-generation offspring of two different types of human. They continuously publish new results in high impact journals, most recently in Science Advances.Our ancient cousins are more present in modern human DNA than we thought: Modern humans possess a small proportion of genes from archaic groups like Neanderthals. Every person having a European or Asian background has an average of...

A molar discovered in a cave in Laos shows where the enigmatic Denisovans could have interbred with the ancestors of modern humans. A tooth found inside of a mountain cave in Laos has solved one of the biggest scientific mysteries of the Denisovans, a branch of ancient humans that disappeared roughly 50,000 years ago. Since 2010, when Denisovan teeth and finger bones were first discovered, DNA testing has revealed that the enigmatic hominins were among the ancestors of people alive today in Australia and the Pacific. But scientists didn’t understand how the Denisovans, whose scant remains had been found only...

Deep in the forests of Laos, in a cave in the Annamite Mountains, lay a single child's tooth. That tooth – an unassuming molar - could be from a mysterious species of human we know little about, and of which few remains are known to exist. "Analyses of the internal structure of the molar in tandem with palaeoproteomic analyses of the enamel indicate that the tooth derives from a young, likely female, Homo individual," researchers write in a new study. The tooth, from the Tam Ngu Hao 2 cave, "most likely represents a Denisovan", the researchers say. Denisovans are an...

Denisova Cave in Siberia, Russia (Cheburgenator/ CC-BY-SA-4.0/Wikimedia Commons) =============================================================================== Nobody knows who she was, just that she was different: a teenage girl from over 50,000 years ago of such strange uniqueness she looked to be a 'hybrid' ancestor to modern humans that scientists had never seen before. Only recently, researchers have uncovered evidence she wasn't alone. In a 2019 study analysing the complex mess of humanity's prehistory, scientists used artificial intelligence (AI) to identify an unknown human ancestor species that modern humans encountered – and shared dalliances with – on the long trek out of Africa millennia ago. "About 80,000...

The mysterious Denisovans were only formally identified about a decade ago, when a single finger bone unearthed from a cave in Siberia clued scientists in to the ancient existence of a kind of archaic hominin we'd never before seen.But that's only one side of the story. The truth is, modern humans had in fact already encountered Denisovans a long time before this. We crossed paths with them an eternity ago.So far back, in fact, that we forgot about them entirely. Especially as they – and other archaic humans, such as the Neanderthals – faded into the unliving past, and Homo...