Navigation Links
Human brain is still evolving

hat expected by chance, indicating that natural selection has driven up the frequency of the haplogroup. They referred to the high-frequency haplogroup as haplogroup D.

When the researchers compared the ethnic groups in their sample for haplogroup D of ASPM, they found that it occurs more frequently in European and related populations, including Iberians, Basques, Russians, North Africans, Middle Easterners and South Asians. That haplogroup was found at a lower incidence in East Asians, sub-Saharan Africans and New World Indians. For Microcephalin, the researchers found that haplogroup D is more abundant in populations outside of Africa than in populations from sub-Saharan Africa.

To produce more informative statistical data on the frequency of haplotype D among population groups, the researchers applied their methods to a larger population sample of more than one thousand people. That analysis also showed the same distribution of haplogroups.

Their statistical analysis indicated that the Microcephalin haplogroup D appeared about 37,000 years ago, and the ASPM haplogroup D appeared about 5,800 years ago ?both well after the emergence of modern humans about 200,000 years ago. "In the case of Microcephalin, the origin of the new variant coincides with the emergence of culturally modern humans," said Lahn. "And the ASPM new variant originated at a time that coincides with the spread of agriculture, settled cities, and the first record of written language. So, a major question is whether the coincidence between the genetic evolution that we see and the cultural evolution of humans was causative, or did they synergize with each other?"

Lahn said that the geographic origin and circumstances surrounding the spread of the haplogroups can only be surmised at this point. "One can make guesses, but our study doesn't reveal how these positively selected variants arrived," he said. "They may have arisen in Europe or the Middle East and spread more
'"/>

Source:Howard Hughes Medical Institute


Page: 1 2 3 4 5

Related biology news :

1. FDA Approves Human Hookworm Vaccine for Phase I Safety Trials
2. New Clues Add 40,000 Years to Age of Human Species
3. Human Cells Filmed Instantly Messaging for First Time
4. Govt Creates Gene Database of Normal Human Tissues
5. Analysis Of Human Genome To Predict The Development Of Illnesses
6. Human Eggs Can Develop From Ovarian Surface Cells In Vitro
7. Determining The Fate Of Cells In The Human Body
8. Whole genome promoter mapping - Human Genome Project v2.0?
9. Human embryonic stem cells have the potential to develop into eggs and sperm in the laboratory
10. Going To Extremes To Improve Human Health
11. Human cerebellum and cortex age in very different ways
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Human brain still evolving

(Date:11/18/2014)... NEW YORK , Nov. 18, 2014 /PRNewswire/ ... iris-based identity authentication solutions, and MorphoTrust USA ... solutions and services, today announced a strategic partnership ... across enterprise, motor vehicle administration (MVA), airport screening ... leader in identity-related solutions, MorphoTrust serves consumers through ...
(Date:11/11/2014)... Nov. 11, 2014  Forensicon, Inc., a ... pleased to announce the promotion of Yaniv Schiff ... Digital Forensics. In Schiff,s new role as Director, he ... of digital forensics examiners and provide leadership within the ... - http://photos.prnewswire.com/prnh/20141110/157719 Schiff joined ...
(Date:11/7/2014)... , Nov. 7, 2014  In conjunction with the ... Police Departments, The Community Foundation of the Verdugos has ... DNA JUSTICE PROJECT," a $250,000 initiative to keep the ... phase. In its first six months of existence, the Lab ... evidence support for local law enforcement. "Because our ...
Breaking Biology News(10 mins):EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2
... in spring they will most likely buy flowering ornamental ... have shown that consumers favor plants that are already ... that can present multiple challenges for commercial growers. ... like bedding plants and perennials start growing crops far ...
... They challenge the mountain ranges of the Alps, the ... known about seamounts, the vast mountains hidden under the world,s ... scientists uncover the mystery of life on these submerged ... under threat. The bathymetry of our oceans ...
... decades scientists believed Neanderthals developed `modern, tools and ... , but new research from the University of ... adapt, innovate and evolve technology on their own. ... a half-century of conventional wisdom maintaining that Neanderthals ...
Cached Biology News:Rotating high-pressure sodium lamps provide flowering plants for spring markets 2Marine scientists unveil the mystery of life on undersea mountains 2Neanderthals more advanced than previously thought 2
(Date:11/21/2014)... The report, "Synthetic Biology ... Cloning kits), Technology (Bioinformatics, Nanotechnology, Gene Synthesis, ... Bioremediation) - Global Forecast to 2018", analyses ... opportunities, and challenges. , Browse 99 market ... 185 pages and in-depth TOC of the ...
(Date:11/21/2014)... Arkansas (PRWEB) November 20, 2014 ... Pinnacle Ozone Solutions, LLC (Pinnacle), and PCI, Inc., ... announced that they have been selected to provide ... of Fayetteville, Arkansas Paul R. Noland Wastewater Treatment. ... BlueInGreen’s patented HyDOZ® gas dissolution technology, ...
(Date:11/21/2014)... Texas (PRWEB) November 21, 2014 ... Sodium Ferrocyanide Industry” is a professional and in-depth ... provides Sodium ferrocyanide information, like its definition, ... as industry overview. This report covers the international ... as global (such as the US, Europe, Asia, ...
(Date:11/21/2014)... , Nov. 20, 2014 Polaris ... been dosed in its Phase 1 trial of ... for the treatment of malignant pleural mesothelioma (MPM) ... is conducting clinical trials on ADI-PEG 20, both ... for the treatment of several other indications, including ...
Breaking Biology Technology:Synthetic Biology Market Expected to Reach $5,630.4 Million in 2018 - New Report by MarketsandMarkets 2Synthetic Biology Market Expected to Reach $5,630.4 Million in 2018 - New Report by MarketsandMarkets 3Synthetic Biology Market Expected to Reach $5,630.4 Million in 2018 - New Report by MarketsandMarkets 4City of Fayetteville Leads Nation with Innovative Ozone Technology 2City of Fayetteville Leads Nation with Innovative Ozone Technology 3City of Fayetteville Leads Nation with Innovative Ozone Technology 4Sodium Ferrocyanide Market: Analysis for Global & China Regions Development Trends Available at DeepResearchReports.com 2Sodium Ferrocyanide Market: Analysis for Global & China Regions Development Trends Available at DeepResearchReports.com 3Polaris Group Announces Treatment of First Patient in Phase 1 Study of ADI-PEG 20 plus Pemetrexed and Cisplatin in Malignant Pleural Mesothelioma And Non-Squamous Non-Small Cell Lung Carcinoma 2
... ,, REYKJAVIK, Iceland , and SALT LAKE CITY, Utah , ... - U.S. Laboratories and Physicians ... , , , ... ARUP will offer deCODE,s DNA-based prostate cancer risk,assessment test to its clients nationwide. , ...
... television and computer screens could be brighter, clearer and ... by a team of researchers from Canada and the ... synthesis of a conjugated organic polymer--widely used as a ... solar cells--could mean more efficient, cheaper electronics. ...
... "Amira Pharmaceuticals, Inc. announced today that its FLAP (5-lipoxygenase-activating protein) program, which ... , , ... the program to Phase 2 studies, which explore the use of the Amira ... , , ...
Cached Biology Technology:ARUP Laboratories Ink Partnership to Offer deCODE ProstateCancer(TM) Test 2ARUP Laboratories Ink Partnership to Offer deCODE ProstateCancer(TM) Test 3ARUP Laboratories Ink Partnership to Offer deCODE ProstateCancer(TM) Test 4ARUP Laboratories Ink Partnership to Offer deCODE ProstateCancer(TM) Test 5Polymer synthesis could aid future electronics 2Amira Pharmaceuticals Hits Two Development Milestones Related to FLAP Inhibitor Program 2
... peptide derived from the internal region of ... Specific for the internal region of the ... the target band at ~590 kDa. ... media from primary tracheobranchial epithelial cultures and ...
Lipid-rich bovine serum albumin for cell culture. It is chromatographically purified and has an IgG content 1.0% (w/w)....
Prepared with distilled water. Yeast extract solution is autolyzed at 150 g/L....
Request Info...
Biology Products: