搜索结果: 1-15 共查到“生物学 variations”相关记录35条 . 查询时间(0.201 秒)
EXPLORING SIMILARITIES AND VARIATIONS OF HUMAN MOBILITY PATTERNS IN THE CITY OF LONDON
time-series cluster analysis smart card data human mobility spatiotemporal patterns
2018/11/9
The availability of new spatial data represents an unprecedented opportunity to better understand and plan cities. In particular, extensive data sets of human mobility data supply new information that...
Haplogroup Classification of Korean Cattle Breeds Based on Sequence Variations of mtDNA Control Region
Haplogroup mtDNA Control Region Korean Cattle Breed Phylogenetic Tree
2016/5/20
Many studies have reported the frequency and distribution of haplogroups among various cattle breeds for verification of their origins and genetic diversity. In this study, 318 complete sequences of t...
Variations in values among major plant community types in the Xilin River Basin, Inner Mongolia, China
plant community types Xilin River Basin Inner Mongolia China
2015/2/4
The δ13C values of 51 plant species selected from eight plant communities along a moisture gradient were measured. Our results showed that all the community types that we investigated are dominated by...
Small variations in genetic code can team up to have a big impact
Small variations genetic code can team have a big impact
2014/5/13
Scientists at USC have definitively demonstrated that large sets of variations in the genetic code that do not individually appear to have much effect can collectively produce significant changes in a...
Phylogenetic Analysis of a Privately-owned Korean Native Chicken Population Using mtDNA D-loop Variations
D-loop Variation Haplotype Korean Native Chicken mtDNA
2016/5/11
The use of Korean native chicken is increasing, and the discovery of new genetic resources is very important from both economic and genetic conservation points of view. In this study, mtDNA D-loop seq...
State-of-the-art testing to measure genetic variations in livestock, and to identify inherited diseases within herds, will soon be available in Australia at The University of Queensland’s Animal Genet...
Tissue-Specific Isoenzyme Variations in Tilapia Fish, Oreochromis niloticus
Oreochromis niloticus Malate Dehydrogenase Acid Phosphatase Peroxidase Isoenzymes
2013/3/8
Native polyacrylamide gel electrophoresis have been used to analyze malate dehydrogenase (MDH), acid phosphatase (Acph) and peroxidase (Px) isoenzymes in different tissues (liver, kidney, muscle and h...
MECHANISMS OF VARIABILITY IN CYP2D6 METABOLISM: THE CONTRIBUTIONS OF POLYMORPHISMS, COPY NUMBER VARIATIONS AND microRNA
COPY NUMBER VARIATIONS microRNA
2015/5/21
Cytochrome P450 2D6 (CYP2D6) is an important drug metabolizing enzyme that is involved in the metabolism of 20-25% of commonly prescribed drugs. There is interindividual variability in CYP2D6 enzyme a...
Benthic Algae (Except Bacillariophyta) and Their Seasonal Variations in Karagöl Lake (Borçka, Artvin-Turkey)
Benthic algae seasonal variations Karagö l Lake
2010/3/17
Seasonal variation in the species composition of the benthic algae of Karagöl Lake was investigated from April to October in 2001 and 2002. The benthic algal flora consisted of 38 taxa belonging ...
Mitochondrial DNA Sequence and Body Size Variations in Turkish Sardine (Sardina pilchardus) Stocks
Sardine Sardina pilchardus mitochondrial DNA cytb genetic divergence
2010/3/25
Sardine (Sardina pilchardus) is one of the most important species among Turkish fisheries and is broadly distributed along its coastal waters. In the present study, mitochondrial DNA sequences from th...
ZFP161基因与中国高度近视人群的相关性研究Variations of the Zinc Finger Protein 161 gene in Chinese with or Without High Myopia
高度近视 ZFP161基因
2008/1/10
摘要为了探讨ZFP161基因与高度近视的相关性,从而寻找高度近视的致病基因,以来自不同地区和家系的中国单纯性高度近视先证者204例和排除高度近视及相关疾病的正常人116例为材料,采用PCR-SSCP法检测病例组及正常人群外周血白细胞基因组DNA中ZFP161基因2个外显子是否存在基因突变,对存在突变的外显子区域经克隆测序后确定变异性质,结合对照组及家系分析确定ZFP161基因突变与高度近视的相关性...
不定胚再生植株的染色体数目变异Variations in Chromosomal Number of Regenerated Melon Plants from Somatic Embryos
甜瓜 继代培养 不定胚再生植株 染色体数目变异
2008/1/3
本实验以甜瓜“小麦瓜”和“青皮绿肉”品种为试材,经不定胚诱导再生植株。分别调查了不同继代培养时间后形成再生植株的染色体数目,并将之与对照染色体数目相比较,发现通过诱导不定胚所得到的再生植株中存在着一定的变异,而且经过不同继代培养时间后,所得到的不定胚再生植株的变异程度不同,随着时间的增加,染色体数目的变异率从3.3%增加到30%,变异幅度也从2n=23~24增加到2n=13~48。从而得出结论:不...
14种淡水鱼基因组大小变异的研究--A Study of the Genome Size Variations in 14 Species of Chinese Fresh-water Fishes
淡水鱼类 DNA含量 变异
2007/12/5
本文报道14种淡水鱼细胞核DNA含量的测定结果。这14种鱼DNA含量变异较大,从2.20pg到5.0pg不等,其中大多数种类具有较高的DNA含量。此外,我们还结合已有资料,讨论了迄今已研究的58种中国淡水鱼(主要为鲤科鱼)DNA含量的变异特征、意义及影响DNA含量变异的因素。
Phenological Variations in the Surface Flavonoids of Artemisia vulgaris L. and Artemisia absinthium L.
Artemisia vulgaris L. Artemisia abisinthium L. surface flavonoid phenological variation
2010/3/18
Qualitative and quantitative variations in the surface flavonoids in relation to phenological development of Artemisia vulgaris L. and Artemisia absinthium L. were examined. Plant material was harvest...
Allozyme Variations and Genetic Differentiation in Mesocricetus brandti Nehring, 1898 and Mesocricetus auratus (Waterhouse, 1839) (Mammalia: Rodentia)
Mesocricetus spp allozyme variation Turkey
2010/3/26
Allozyme variations were investigated by the electrophoretic analysis of 20 gene loci in 5 populations of Mesocricetus brandti and Mesocricetus auratus from Anatolia and Iran. Of the 20 loci analysed,...