搜索结果: 136-150 共查到“知识库 遗传学”相关记录2195条 . 查询时间(3.071 秒)
目的：探讨粒状头样2（grainyhead-like 2，GRHL2）基因多态性与噪声性听力损失（noise-induced hearing loss，NIHL）易感性的关系。方法： 使用病例对照研究方法，对某钢铁厂3 790名噪声暴露作业人员进行流行病学调查和听力学测试，通过相关标准和匹配条件，共确定286例病例作为病例组和286例作为对照组。根据《工作场所物理因素测量噪声》（GBZ/T189....
线虫感知行为的研究进展
线虫 化学感知 行为
2016/5/24
寄生性线虫寄生于动植物中，给人类健康和动植物生产带来了巨大危害。线虫的感受系统能准确地感知外界信息，从而调节个体及时躲避危险、趋近适宜环境，这为线虫的生存繁衍提供重要保障。研究发现，线虫的感知行为存在于其各种生命活动中（如觅食、寻找宿主、交配等），并且这种行为具有很强的特点和规律性。作者总结了线虫感知能力对其行为影响的研究进展，旨在帮助读者了解本领域的研究现状和研究前景，为寄生性线虫的防治和新型药...
Sugar-sweetened beverage intake, chromosome 9p21 variants, and risk of myocardial infarction in Hispanics
gene-diet interaction Hispanics myocardial infarction sugar-sweetened beverage genetics
2018/11/29
Background: Chromosome 9p21 variants are among the most robust genetic markers for coronary artery disease (CAD), and previous studies have suggested that genetic effects of this locus might be modifi...
Dietary folate, B vitamins, genetic susceptibility and progression to advanced nonexudative age-related macular degeneration with geographic atrophy: a prospective cohort study
folate B vitamins geographic atrophy macular degeneration genetics
2018/11/29
Background: There is growing evidence of the importance of nutrition in age-related macular degeneration (AMD), but few studies have explored associations with folate and B vitamins. No effective ther...
目的：探讨FADS1 rs174537基因多态性与侵袭性牙周炎患者血清蛋白的相关性，为侵袭性牙周炎的诊断和治疗提供一定的理论基础。方法：选择353名侵袭性牙周炎患者（AgP组）和125名健康对照者（HP组）进行FADS1 rs174537位点基因型和血清生化指标的检测，比较分析不同FADS1 rs174537基因型患者的血清总蛋白（total protein ,TP）、球蛋白（globulin，G...
GENETIC ASSESSMENT OF CONNECTIVITY AMONG MARINE POPULATIONS
MARINE POPULATIONS GENETIC ASSESSMENT
2015/12/17
Geographical surveys of genetic variation provide an indirect means of tracing movments made between marine populations by larvae and other propagules. Genetic markers can provide strong evidence that...
Evolution, Synthesized
Evolution Synthesized
2015/12/17
Mayr himself had uncovered many new
species, particularly of the birds of New
Guinea and the Pacific. But he knew there
was more information in a museum than
just its species lists. By addin...
In addition to altering global ecology, technology and human population growth also
affect evolutionary trajectories, dramatically accelerating evolutionary change in
other species, especially in co...
Molecular genetics of ecological diversification: Duplication and rapid evolution of toxin genes of the venomous gastropod Conus
ecological diversification Duplication
2015/12/17
Predatory snails in the marine gastropod
genus Conus stun prey by injecting a complex mixture of
peptide neurotoxins. These conotoxins are associated with
trophic diversification and block a divers...
The fossil record of marine gastropods has
been used as evidence to support the operation of species
selection; namely, that species with limited dispersal differentially increase in numbers because...
Intraspecific Genetic Diversity in the Marine Shrimp Penaeus vannamei: Multiple Polymorphic Elongation Factor-1a Loci Revealed by Intron Sequencing
EPIC-PCR nuclear introns shrimp concerted evolution
2015/12/17
Intron sequences from the elongation factor-1a (EF1a) gene from the marine shrimp Penaeus
vannamei reveal extensive variation even among inbred populations of hatchery-raised shrimp. Among 44
indivi...
Population structure of the black tiger prawn, Penaeus monodon, among western Indian Ocean and western Paci®c populations
tiger prawn Penaeus monodon
2015/12/17
We examined the population structure of the
black tiger prawn, Penaeus monodon Fabricius, 1798, in
the Indo-West Paci®c by analyzing the geographic distribution of elongation factor 1-alpha int...
The Hawaiian Islands are renowned for some
of the most spectacular species radiations in the world. Most of
these radiations have been attributed to single colonization
events, although the evidenc...
Accuracy of Estimating Genetic Distance between Species from Short Sequences of Mitochondrial DNA
Estimating Genetic Distance Mitochondrial DNA
2015/12/17
Recent advances in molecular techniques allow rapid determination of genetic
divergence, and in many circumstances the polymerase chain reaction (PCR) and
DNA sequencing have become the technologi...
GENETIC DIVERGENCE, REPRODUCTIVE ISOLATION, AND MARINE SPECIATION
allopatric speciation dispersal molecular evolutio
2015/12/17
In marine species, high dispersal is often associated with only mild genetic
differentiation over large spatial scales. Despite this generalization, there are
numerous reasons for the accumulation o...