anthropology45.59 min read
Neanderthal pelvis reshapes the birth-walk debate
3 hours ago•Source: Archaeology News Online Magazine
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8.985 min•18 days ago
Ancient Neanderthal Variant Still Shapes Muscles and Jaws in Modern Humans
A study comparing modern and Neanderthal genomes found a Neanderthal variant of the growth hormone receptor that enhances growth signaling and persists in non-African populations, especially in some South and East Asian groups where about 20% carry it. Carriers tend to be taller and heavier due to increased muscle mass, and exhibit Neanderthal-like jaw traits (shorter mandibular ramus, higher overbite, shorter tooth roots). Effects emerge around puberty, with lab experiments showing faster cell growth and stronger signaling in cells with the Neanderthal receptor. The variant is one of many factors influencing body shape and is not the sole determinant of the modern human physique.
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Northwestern Europe’s Neanderthals Revealed as a Connected Regional Population, DNA Study Finds
A Nature study sequenced 27 Neanderthals from Belgium and France (plus a high-quality genome from a 45,000-year-old Goyet Cave individual) and found that late Neanderthals in northwestern Europe formed a connected regional population with close ties across the region. Belgian specimens show no signs of mating among close relatives, and none of the Neanderthal genomes carry recent human DNA, suggesting asymmetry with modern humans. There is no evidence that harmful mutations accumulated over time, indicating extinction was not simply due to genetic deterioration; the final chapter of Neanderthal life in this region remains open, highlighting regional diversity and connectivity prior to their disappearance around 40,000 years ago.
Late-Stage Size Jump in Homo Rewrites Hominin Growth Story
A University of Reading-led analysis of 386 fossil specimens across 21 hominin species used phylogenetically informed models to test how body size evolved. Contrary to a simple, steady increase, the data point to a major size jump late in the genus Homo, with Homo ergaster/erectus reaching ~60 kg on average and aligning with other shifts like increased bipedality and carnivory. Small-bodied lineages such as Homo floresiensis and Homo naledi remain exceptions, and any gradual, across-the-board size rise is only moderately supported and sensitive to dataset and methods. The study highlights a mosaic pattern of body-size evolution rather than a single upward trend.
Near Oceania’s Ancient Genome: Denisovan Heritage Deep in Pacific DNA
Researchers sequenced 177 high-coverage genomes from 12 Near Oceanian populations and found that this region harbors some of the oldest human DNA, including a rich Denisovan legacy from at least three Denisovan-like groups. Near Oceanian genomes contain about 2.5 times more archaic DNA than Europeans and far more Denisovan DNA than East Asians, with high-frequency archaic variants linked to immunity and skeletal development, suggesting multiple interbreeding events and adaptive benefits. The findings reshape our understanding of Denisovans and human evolution and have implications for medical research in Oceanian populations.
Sex-biased interbreeding left a lasting Neanderthal DNA pattern in modern humans
A genetic analysis comparing Neanderthal genomes with African references shows Neanderthals carried far more modern human DNA on their X chromosome than on other chromosomes, while modern humans have very little Neanderthal DNA on their X. The researchers argue that this pattern results from sex-biased interbreeding—likely Neanderthal males with modern human females—rather than widespread genetic incompatibility. Computer simulations using a mating bias reproduce the observed distribution, suggesting social/partner-choice factors shaped inheritance. The team plans to investigate population structure to determine which sex moved between groups and how cultural practices influenced mating in ancient encounters.
"Lucy Fossil Sheds Light on Ancient Views of Nudity and Shame"
The 3.2-million-year-old Lucy fossil, a key specimen of Australopithecus afarensis, challenges our understanding of early human nudity and cultural perceptions of shame. Technological advancements suggest Lucy may have been less hairy than previously thought, aligning with theories that early humans lost most body hair millions of years ago. The depiction of Lucy in modern media often reflects contemporary cultural biases rather than scientific accuracy, revealing more about our own views on nudity, shame, and gender roles.
"Ancient Origins of Central African Hunter-Gatherer Networks Revealed"
A study by the University of Zurich reveals that Central African hunter-gatherer groups had extensive social networks and cultural exchanges long before the advent of agriculture, preserving ancient cultural diversity. The research, which analyzed genetic data, musical instruments, and specialized vocabulary, shows that these interactions influenced the genetic, linguistic, and cultural traits of these populations, highlighting deep-rooted cultural networking in the region.
"The Origins of Human Clothing: A Historical Perspective"
The question of when humans started wearing clothes is difficult to answer due to the lack of surviving clothing artifacts. Evidence from bones, lice evolution, and archaeological findings suggests that Homo heidelbergensis may have worn bear skins around 300,000 years ago, while anatomically modern humans likely began regularly wearing simple clothes around 170,000 years ago. However, different human groups may have started and stopped wearing clothes multiple times throughout history, as seen in the archaeological record of Aboriginal people in Tasmania.
"Understanding the Lives of Female Neanderthals"
Research based on DNA and fossils provides insights into the lives of female Neanderthals, suggesting they may have reached maturity at an earlier age than modern humans. Genetic data hints at female migration between communities, and childbirth for Neanderthals was likely painful. Evidence indicates that both male and female Neanderthals participated in hunting and other activities, suggesting a lack of strict gender-based division of labor within their communities.
The Influence of Cultural Practices on Height Differences in Neolithic Europe
A new study published in Nature Human Behavior reveals that height differences between men and women in Neolithic Europe were strongly influenced by cultural and environmental factors. Researchers analyzed skeletal remains from the Early Neolithic Period and found that women in North Central Europe experienced high environmental stress but did not reach the same height as men, suggesting cultural preferences that favored men's recovery time. In contrast, the height differences between sexes in the Mediterranean population were less pronounced, indicating a more equal distribution of rest and recovery time. The study highlights the importance of culture in shaping physical development and calls for further research to explore the interactive impact of genetics, environment, and culture on human biology.
Unveiling Neanderthals: New Discoveries Shed Light on Their Enigmatic Past
Recent discoveries have shed new light on the lives of Neanderthals, our closest-known relatives. Archaeological findings have revealed evidence of Neanderthals engaging in creative activities such as making rope, using pigments for body adornment, and creating jewelry. Studies of the Neanderthal genome have confirmed that interbreeding occurred between Neanderthals and Homo sapiens. Research on brain development genes suggests potential cognitive differences between the two species. Neanderthals likely had a shorter childhood and smaller social networks compared to Homo sapiens. The decline of Neanderthals may have been influenced by factors such as environmental fluctuations and competition with Homo sapiens. However, their genetic legacy lives on in modern humans.