连续性纯合片段(Runs of Homozygosity,ROH)是研究群体历史和性状特征的窗口,被广泛用于检测动物全基因组近交水平和识别基因组选择区域。目前,大量单核苷酸多态性(Single Nucleotide Polymorphisms,SNP)基因型的可用性使得基因组中ROH...连续性纯合片段(Runs of Homozygosity,ROH)是研究群体历史和性状特征的窗口,被广泛用于检测动物全基因组近交水平和识别基因组选择区域。目前,大量单核苷酸多态性(Single Nucleotide Polymorphisms,SNP)基因型的可用性使得基因组中ROH的特征变得更加准确,但缺乏可靠和统一的ROH分析指南。本文介绍了ROH发展简史、检测软件及参数,综述了ROH在杜洛克、大白、长白、皮特兰猪等商业瘦肉型猪遗传育种中的应用,包括遗传多样性的评估、近交系数的度量、人工选择痕迹的识别和不利ROH的检测,并对ROH在猪育种应用中的发展前景进行了展望。展开更多
Based on some former studies of Chinese rural society, this paper summerizes the achievements and limitations of general Chinese rural studies and then proposes a social operation model in rural areas which is dominat...Based on some former studies of Chinese rural society, this paper summerizes the achievements and limitations of general Chinese rural studies and then proposes a social operation model in rural areas which is dominated by the squires. It uses some specific historical data and discoveries of feild sduty to further examine the profound influence of the squires on rural politcal construction in three different aspects: the model of clan and religion, the role as inter-mediator and the growth of basic armed forces. The study found that this special social group played a center role in Chinese rural political system from ancient to modem times, particularly, the research considers the decline of the squire society since the establishment of the new government in 1949. In the end, this paper points out the cultural guiding significance of this social model in the study to the rural construction in contemporay China by predicting the possiblity of renaissance展开更多
文摘连续性纯合片段(Runs of Homozygosity,ROH)是研究群体历史和性状特征的窗口,被广泛用于检测动物全基因组近交水平和识别基因组选择区域。目前,大量单核苷酸多态性(Single Nucleotide Polymorphisms,SNP)基因型的可用性使得基因组中ROH的特征变得更加准确,但缺乏可靠和统一的ROH分析指南。本文介绍了ROH发展简史、检测软件及参数,综述了ROH在杜洛克、大白、长白、皮特兰猪等商业瘦肉型猪遗传育种中的应用,包括遗传多样性的评估、近交系数的度量、人工选择痕迹的识别和不利ROH的检测,并对ROH在猪育种应用中的发展前景进行了展望。
文摘Based on some former studies of Chinese rural society, this paper summerizes the achievements and limitations of general Chinese rural studies and then proposes a social operation model in rural areas which is dominated by the squires. It uses some specific historical data and discoveries of feild sduty to further examine the profound influence of the squires on rural politcal construction in three different aspects: the model of clan and religion, the role as inter-mediator and the growth of basic armed forces. The study found that this special social group played a center role in Chinese rural political system from ancient to modem times, particularly, the research considers the decline of the squire society since the establishment of the new government in 1949. In the end, this paper points out the cultural guiding significance of this social model in the study to the rural construction in contemporay China by predicting the possiblity of renaissance