Navigation Links
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, based on a new assessment by researchers from Ohio State University and the University of Newcastle .

They found that the rate of tooth growth present in the Neanderthal fossils they examined was comparable to that of three different populations of modern humans.

And since the rate of tooth growth has become a more-accepted tool for estimating the length of childhood among hominids, the finding is the latest evidence suggesting that Neanderthals may not have been as different from modern humans as some researchers have thought.

The study by Debbie Guatelli-Steinberg, assistant professor of anthropology at Ohio State , appeared in the current issue of the Proceedings of the National Academy of Sciences. Donald J. Reid, lecturer in oral biology at the University of Newcastle , Thomas A. Bishop, associate professor of statistics, and Clark Larsen, professor and chair of anthropology, both at Ohio State , were co-authors in the study.

"Based on our study of the enamel of these Neanderthal teeth and other modern ones, we can't support the claim that Neanderthals grew up more quickly than do modern humans," she said.

Key to this conclusion are microscopic lines on the outside of teeth that mark the incremental growth of enamel on a young tooth. Like tree rings that can gauge the age of a redwood, these striations ?called perikymata ?record new growth on the surface of the tooth.

Researchers know from earlier work that these markings are present in all forming teeth, signifying six to 12 days of growth. By multiplying that interval by the number of perikymata on a tooth's surface, researchers can gauge how long it took for the tooth to mature. And that gives them an indication of the length of an individual's childhood.

Neanderthals, Homo neanderthalensis, were the
'"/>

Source:Ohio State University


Page: 1 2 3

Related biology news :

1. Genetic study of Neanderthal DNA reveals early split between humans and Neanderthals
2. Climate change was the cause of Neanderthal extinction in the Iberian Peninsula
3. Nanospheres that block pain of sensitive teeth
4. Birds that make teeth
5. Tetracycline plus teeth equal gray smile
6. Ultrasound may help regrow teeth
7. Quantum dots provide a faster, more sensitive method for detecting respiratory viral infections
8. Muscle repair: Making a good system better, faster; implications for aging, disease
9. Mosquito study shows new, faster way West Nile can spread
10. Clean skies=faster global warming?
11. Jefferson biologist coaxing human embryonic stem cells to make dopamine with simpler, faster method
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Neanderthal teeth grew faster than comparable modern humans

(Date:7/29/2014)... study from UC San Francisco is the first to ... overtime and accelerate cellular aging, these negative effects may ... sleeping well. , "The study participants who exercised, ... than the ones who didn,t maintain healthy lifestyles, even ... author Eli Puterman, PhD, assistant professor in the department ...
(Date:7/28/2014)... University of Arizona has sequenced the complete genome of ... and agriculturalists, understanding of the growing patterns of African ... rice varieties that are better able to cope with ... , The paper, "The genome sequence of African rice ... was published online in Nature Genetics on ...
(Date:7/28/2014)... have pinpointed a mechanism in part of the brain that ... it to both type 1 and type 2 diabetes. The ... Proceedings of the National Academies of Sciences . , ... a part of the hypothalamus known as the ventromedial nucleus ... glucose levels in the blood," said lead author Sabrina Diano, ...
Breaking Biology News(10 mins):Healthy lifestyle may buffer against stress-related cell aging, study says 2Generating a genome to feed the world: UA-led team sequences African rice 2Generating a genome to feed the world: UA-led team sequences African rice 3Generating a genome to feed the world: UA-led team sequences African rice 4Glucose 'control switch' in the brain key to both types of diabetes 2
... dayand starting this week, they will be part of a multinational ... mines left over from as long ago as the First and ... naval exercises in the Baltic Sea this year, where more than ... all part of a day,s work for U.S. Navy divers, who ...
... in air pollution were associated with changes in biomarkers of ... as measures of cardiovascular physiology in healthy young persons, according ... JAMA, a theme issue on Global Health. ... but the mechanisms by which air pollution leads to CVD ...
... A review of studies reporting estimates of the ... malaria over the past 20 years suggests that a ... women attending antenatal (before birth) facilities in sub-Saharan Africa, ... published in the May 16 issue of JAMA ...
Cached Biology News:Undersea warriors, undersea medicine: The future force 2Air pollution level changes in Beijing linked with biomarkers of cardiovascular disease 2Air pollution level changes in Beijing linked with biomarkers of cardiovascular disease 3Air pollution level changes in Beijing linked with biomarkers of cardiovascular disease 4Considerable prevalence of both malaria, STIs exist among pregnant women in sub-Saharan Africa 2
(Date:7/29/2014)... 2014  Pomerantz LLP is investigating claims on behalf ... "Company") (NASDAQ: IPXL).  Such investors are advised to contact ... or 888-476-6529, ext. 237. The investigation concerns ... have violated Sections 10(b) and 20(a) of the Securities ... 29, 2014, Impax Laboratories, Inc. (the "Company") issued a ...
(Date:7/29/2014)... 29, 2014 A new report ... (types, applications and geography) - Size, Share, Global Trends, ... and Forecast, 2013 - 2020", suggests that the global ... by 2020 registering a CAGR of 11.1% from 2014 ... by the electro surgical devices in operative procedures by ...
(Date:7/29/2014)... 2014 Philadelphia’s newest entrepreneurial incubation space is ... start. The Innovation Center @3401 , a collaborative effort ... Science Center to help attract and nurture start-up businesses ... 28. , The Innovation Center @3401 (ic@3401), ... Streets, is the new home of DreamIt Ventures ...
(Date:7/29/2014)... July 29, 2014  United Therapeutics Corporation (NASDAQ: ... financial results for the second quarter ended ... shows that our medicines are reaching increasing ... hypertension (PAH)," said Martine Rothblatt, Ph.D., United ... commercial launch this quarter of our extended-release ...
Breaking Biology Technology:SHAREHOLDER ALERT: Pomerantz Law Firm Investigates Claims On Behalf of Investors of Impax Laboratories, Inc. - IPXL 2Global Surgical Equipment Market is expected to reach $12.1 billion by 2020 - Allied Market Research 2Global Surgical Equipment Market is expected to reach $12.1 billion by 2020 - Allied Market Research 3Innovation Center @3401 Opens for Business; DreamIt Ventures and Point.io First Residents 2Innovation Center @3401 Opens for Business; DreamIt Ventures and Point.io First Residents 3United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 2United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 3United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 4United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 5United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 6United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 7United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 8United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 9United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 10United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 11United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 12United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 13
... Toronto, Ontario - Cedara Software , a ... of medical software technologies, has released a new version ... toolkit, MergeCOM-3. , ,The product is a software development ... and supports flexible DICOM connectivity for software applications. , ...
... into the third year of their Sarbanes-Oxley ... is a good time to pause and reflect on ... on good internal control practices, I hear from hundreds ... how painful implementing 404 has become for their companies. ...
... officials may not be saying it, but they are frightened ... deadly avian flu virus begins quietly in scattered areas of ... on it - with substantial harm done to public health ... one that is exacerbated by the lack of an electronic ...
Cached Biology Technology:The Big Picture of SOX 404 2The Big Picture of SOX 404 3The Big Picture of SOX 404 4UW compound counters Avian flu 2UW compound counters Avian flu 3
Cytofix/Cytoperm Kit 250 Tests...
The BD PhosFlow Fix Buffer I can be used for the simultaneous fixation and permeabilization of cells prior to intracellular staining. Applications: Intracellular Staining (Flow) Storage Temperature:...
... Anti-MAGE-D2/NRAGE-Like 2b GenBank ... Immunogen : peptide (C-QSQENQDTRPKVKAKK), corresponding ... human MAGE-D2/NRAGE-Like 2b Formulation: antiserum ... 30% glycerol Quality Assurance: routinely ...
Request Info...
Biology Products: