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New dinosaur with heart-shaped tail offers clues to evolution of Africa's ecosystems（图）
New dinosaur heart-shaped tail evolution of Africa ecosystems
2019/11/22
A dinosaur that wore its "heart" on its tail is providing new clues to how ecosystems evolved on the African continent during the Cretaceous Period some 100 million years ago, according to researchers...
Complete Mitochondrial Genome Sequences of Chinese Indigenous Sheep with Different Tail Types and an Analysis of Phylogenetic Evolution in Domestic Sheep
Mitochondrial DNA Mitogenome Sheep Phylogenetic Mitochondrial Control Region
2016/5/20
China has a long history of sheep (Ovis aries [O. aries]) breeding and an abundance of sheep genetic resources. Knowledge of the complete O. aries mitogenome should facilitate the study of the evoluti...
用改良TAIL-PCR技术分析转基因烟草cbf1基因插入区的侧翼序列
2007/11/13
1995年由LIU[1~3]等首创并发展了热不对称交错PCR（TAIL-PCR, Thermal Asymmetric Interlace PCR）方法，对拟南芥中T-DNA整合位点的侧翼序列进行了扩增。这种方法利用3个特异的巢式引物和1个较短的随机简并引物引发PCR扩增。它用一系列特异性的巢式引物除去由特异引物单独延伸所产生的非特异性产物。又由于特异性引物和随机引物的退火温度有明显的差别，所以用...
Candidate Genes with Ovulation by Differential Display PCR in Small Tail Han Sheep
Ovary Little Size Small Tail Han Sheep DD-PCR
2016/4/21
To find the candidate genes concerned with ovulation rate of sheep, Differential Display Reverse Transcription Polymerase Chain Reaction was employed to find the differently expressed cDNA controlling...