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Inconsistencies with Neanderthal genomic DNA sequences
October 15, 2007Were Neanderthals direct ancestors of contemporary humans or an evolutionary side branch that eventually died out? This is one of the enduring questions in human evolution as scientists explore the relationship of fossil groups, such as Neanderthals, with people alive today. Two recent papers describing the sequencing of Neanderthal nuclear DNA from fossil bone held promise for finally answering this question [1, 2]. However, the two studies came to very different conclusions regarding the ancestral role of Neanderthals. Jeffrey D. Wall and Sung K. Kim from University of California San Francisco now reveal in PLoS Genetics what they found when they reanalyzed the data from the two original studies.
Wall and Kim's reanalysis reveals inconsistencies between them and they believe that possible contamination with modern human DNA and/or a high rate of sequencing errors compromised the findings of one of the original Neanderthal DNA studies. The authors therefore recommend that we carefully evaluate published and future data before arriving at any firm conclusions about human evolution.
Public Library of Science
Neanderthal News and Current Neanderthal Events RSSBritain's last Neanderthals were more sophisticated than we thought
An archaeological excavation at a site near Pulborough, West Sussex, has thrown remarkable new light on the life of northern Europe's last Neanderthals. It provides a snapshot of a thriving, developing population - rather than communities on the verge of extinction.
Ancient DNA reveals that some Neanderthals were redheads
Ancient DNA retrieved from the bones of two Neanderthals suggests that at least some of them had red hair and pale skin, scientists report this week in the journal Science.
New evidence on the role of climate in Neanderthal extinction
The mystery of what killed the Neanderthals has moved a step closer to resolution after an international study led by the University of Leeds has ruled out one of the competing theories - catastrophic climate change - as the most likely cause.
Gendered division of labor gave modern humans advantage over Neanderthals
Diversified social roles for men, women, and children may have given Homo sapiens an advantage over Neanderthals, says a new study in the December 2006 issue of Current Anthropology.
Genetic study of Neanderthal DNA reveals early split between humans and Neanderthals
In the most thorough study to date of the Neanderthal genome, scientists suggest an early human-Neanderthal split. The two species have a common ancestry, say the authors, but do not share much else after evolving their separate ways.
Neanderthal Genome Sequencing Yields Surprising Results and Opens a New Door to Future Studies
The veil of mystery surrounding our extinct hominid cousins, the Neanderthals, has been at least partially lifted to reveal surprising results.
Meet the Earliest Baby Girl ever Discovered!
3.3 million years ago, a three year old girl died in present day Ethiopia, in an area called Dikika. Though a baby, she provides researchers with a unique account of our past, as would a grandmother. Her completeness, antiquity, and age at death combine make this find unprecedented in the history of paleoanthropology and open many new research avenues to investigate into the infancy of early human ancestors.
Neanderthals were as good at hunting as early modern humans
The disappearance of Neanderthals is frequently attributed to competition from modern humans, whose greater intelligence has been widely supposed to make them more efficient as hunters.
Neanderthal teeth grew no faster than comparable modern humans
Recent research suggested that ancient Neanderthals might have had an accelerated childhood compared to that of modern humans but that seems flawed.
Profile of the Aging Kidney: PLoS Biology Press Release
A Global View of Gene Expression in the Aging Kidney
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