www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

   
  home feedback about us  
   
CHINAGATE.WEST DEVELOPMENT.minority prosperity    
    Key Issues  
 
  Sustainable development & environment  
  Industrial restructuring  
  Infrastructure  
  Market mechanism  
  Capital market  
  High-tech  
  Education & HR  
  Overseas Investment  
  Minority prosperity  
  East-west cooperation  
  Agriculture  
  Travel  
 
 
       
       
       
     
       
       
       
       
 
 
 
Yunnan establishes ethnic group gene bank


2006-01-05
China Daily

The largest gene bank of Chinese ethnic minority groups has recently been set up at Yunnan University in Southwest China's Yunnan Province.

A total of 1,250 healthy male DNA samples from all 25 minority ethnic groups in Yunnan have been collected by the bank, experts said.

Experts from the university said that 50 samples were taken from each of the 25 minority groups. Every minority group has a population of at least 5,000.

All the samples are stored in the university's gene bank, which is the world's largest minority group DNA information base, in both variety and quantity.

It took experts four years to collect the samples, and international standards were followed throughout the procedure, said Xiao Chunjie, director of the Human Genetics Studies Centre with Yunnan University, based in Kunming, capital of the province.

To get particularly pure samples, the people who gave DNA all live in remote areas, he said.

The qualifications of the donors is that they must have a pure bloodline for at least three generations, with no history of intermarriage with other ethnic groups, he said.

In addition, the sampled men must have no relationship with each other.

"The reason why only male samples were collected is that men have both X and Y chromosomes, while women just have X chromosomes," he said.

Experts believe that the bank will aid scientific research into gene variety and hereditary diseases among minority nationalities.

Yunnan is one of the birthplaces of the Chinese nation. Yuanmou Man is believed to have lived there about 1.7 million years ago.

The fossils of Yuanmou Man were first discovered at Shangnabang Village in Yuanmou County in 1965.

Currently, 25 out of China's 55 minority ethnic groups live in Yunnan, including the Yi, Bai and Hani. Fifteen of the groups are exclusive to the province, and the total minority population there is 10 million.

 

 
   
 
home feedback about us  
  Produced by m.orobotics.cn. All Rights Reserved
E-mail: webmaster@chinagate.com.cn
主站蜘蛛池模板: 一级aaaaaa毛片免费 | 91精品国产免费久久国语蜜臀 | 欧美性色xo影院在线观看 | 欧美a欧美1级 | 精品亚洲成a人在线播放 | 国产日比视频 | 99视频九九精品视频在线观看 | 欧美另类videosbestsex久久 | 久久毛片久久毛 | 免费看黄色三级毛片 | 日本一级特黄aa毛片免费观看 | 午夜国产视频 | 国内美女福利视频在线观看网站 | 久久久久久久91精品免费观看 | 久久国产成人精品国产成人亚洲 | 一个人看的www日本视频 | 在线观看亚洲专区 | 精品一区二区三区免费观看 | 欧美一做特黄毛片 | 中文字幕成人在线观看 | 69av美女| 久久美女精品国产精品亚洲 | 日本 欧美 国产 | 手机看片高清国产日韩片 | 亚洲美女在线观看亚洲美女 | 日本人在线看片 | 国内视频一区二区 | 国产成人精品999在线观看 | 女人一级一级毛片 | 亚洲人欧洲日韩 | 高清性色生活片欧美在线 | 国产精品高清视亚洲精品 | 日韩国产成人资源精品视频 | 亚洲精品人成在线观看 | 在线黄色影院 | 免费黄色毛片视频 | 成年人网站免费在线观看 | 欧美精品在线视频观看 | 加勒比久久综合 | 成人午夜视频在线播放 | 亚洲国产精品免费 |