Education has been underdeveloped in Dongxiang Autonomous County, Gansu Province, which is the only region in China where ethnicDongxiangs live in compact communities. In primary schools there, only about 20% of the p...Education has been underdeveloped in Dongxiang Autonomous County, Gansu Province, which is the only region in China where ethnicDongxiangs live in compact communities. In primary schools there, only about 20% of the pupils achieve a passing grade for the two basic subjects of Chinese and mathematics, less than one-third of the average local rate. However, this has changed markedly thanks to a bilingual education experiment.展开更多
目的研究D5S818、D8S1179、D7S820、CSF1PO、D2S1338、D3S1358、vWA、D21S11、D16S539、PentaE、TPOX、TH01、D19S433、D18S51、FGA、D6S1043、D13S317、D12S391等18个短串联重复序列（short tandem repeats,STR）基因座在甘肃地区东乡...目的研究D5S818、D8S1179、D7S820、CSF1PO、D2S1338、D3S1358、vWA、D21S11、D16S539、PentaE、TPOX、TH01、D19S433、D18S51、FGA、D6S1043、D13S317、D12S391等18个短串联重复序列（short tandem repeats,STR）基因座在甘肃地区东乡族人群的遗传多态性。方法采用PCR扩增及毛细管电泳技术对615名甘肃地区东乡族个体18个STR基因座进行分析。结果 615名甘肃地区东乡族个体在18个STR基因座上,共检出213种等位基因,850种基因型,其分布均符合Hardy-Weinberg平衡（P〉0.05）,18个基因座的杂合度（H）在0.633～0.928之间,匹配概率（Pm）在0.013～0.205之间,个体识别概率（DP）在0.795～0.987之间,多态信息含量（PIC）在0.560～0.920之间,非父排除概率（PE）值在0.332～0.854之间。结论实验研究了甘肃地区东乡族人群18个STR基因座的遗传多态性,为人类群体遗传学及法医学后续研究提供详实可靠的基础数据。展开更多
Parelasmotherium linxiaense sp. nov.,discovered from the Hipparion fauna in Dongxiang County,Gansu Province,China,has large size,relatively weak enamel plications,and marked crista and hypocone to be distinguished fro...Parelasmotherium linxiaense sp. nov.,discovered from the Hipparion fauna in Dongxiang County,Gansu Province,China,has large size,relatively weak enamel plications,and marked crista and hypocone to be distinguished from P.schansiense and P.simplum. The first discovery of the lower cheek teeth of Parelasmotherium is very important,because we can recognize more characters of Parelasmotherium different from those of Sinotherium based on them. This new species has an accurate horizon,and its age is the early Late Miocene.展开更多
文摘Education has been underdeveloped in Dongxiang Autonomous County, Gansu Province, which is the only region in China where ethnicDongxiangs live in compact communities. In primary schools there, only about 20% of the pupils achieve a passing grade for the two basic subjects of Chinese and mathematics, less than one-third of the average local rate. However, this has changed markedly thanks to a bilingual education experiment.
文摘目的研究D5S818、D8S1179、D7S820、CSF1PO、D2S1338、D3S1358、vWA、D21S11、D16S539、PentaE、TPOX、TH01、D19S433、D18S51、FGA、D6S1043、D13S317、D12S391等18个短串联重复序列（short tandem repeats,STR）基因座在甘肃地区东乡族人群的遗传多态性。方法采用PCR扩增及毛细管电泳技术对615名甘肃地区东乡族个体18个STR基因座进行分析。结果 615名甘肃地区东乡族个体在18个STR基因座上,共检出213种等位基因,850种基因型,其分布均符合Hardy-Weinberg平衡（P〉0.05）,18个基因座的杂合度（H）在0.633～0.928之间,匹配概率（Pm）在0.013～0.205之间,个体识别概率（DP）在0.795～0.987之间,多态信息含量（PIC）在0.560～0.920之间,非父排除概率（PE）值在0.332～0.854之间。结论实验研究了甘肃地区东乡族人群18个STR基因座的遗传多态性,为人类群体遗传学及法医学后续研究提供详实可靠的基础数据。
文摘Parelasmotherium linxiaense sp. nov.,discovered from the Hipparion fauna in Dongxiang County,Gansu Province,China,has large size,relatively weak enamel plications,and marked crista and hypocone to be distinguished from P.schansiense and P.simplum. The first discovery of the lower cheek teeth of Parelasmotherium is very important,because we can recognize more characters of Parelasmotherium different from those of Sinotherium based on them. This new species has an accurate horizon,and its age is the early Late Miocene.
