搜索结果: 76-90 共查到“理学 Genetic”相关记录511条 . 查询时间(0.249 秒)
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...
Faulty bioelectric signal responsible for facial defects caused by rare genetic disorder
Faulty bioelectric signal facial defects genetic disorder
2016/2/23
Tufts University biologists have discovered the bioelectric mechanism by which the rare genetic disorder Andersen-Tawil syndrome (ATS) causes facial abnormalities, a finding that could lead to prevent...
Genetic mechanism found for fish adaptations to pollution
Genetic mechanism fish pollution
2016/2/23
A Washington State University biologist has found the genetic mechanism that lets a fish live in toxic, acidic water. The discovery opens new insights into the functioning of other “extremophiles” and...
NEW RESEARCH LOOKS AT GENETIC VARIATION IN A HUMAN COMMENSALIST TOAD
GENETIC VARIATION HUMAN COMMENSALIST TOAD
2016/2/22
Most species are negatively affected when humans transform natural habitats into urban areas and agricultural lands, but a few species actually benefit from these activities. These species — called hu...
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...
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...
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...
Pre-Whaling Genetic Diversity and Population Ecology in Eastern Pacific Gray Whales: Insights from Ancient DNA and Stable Isotopes
Population Ecology Pre-Whaling Genetic Diversity
2015/12/11
Commercial whaling decimated many whale populations, including the eastern Pacific gray whale, but little is known about
how population dynamics or ecology differed prior to these removals. Of partic...
Protein evolution in two co-occurring types of Symbiodinium: an exploration into the genetic basis of thermal tolerance in Symbiodinium clade D
Symbiodinium Thermal tolerance Coral
2015/12/11
The symbiosis between reef-building corals and photosynthetic dinoflagellates (Symbiodinium) is an
integral part of the coral reef ecosystem, as corals are dependent on Symbiodinium for the majority ...
Coastal upwelling is linked to temporal genetic variability in the acorn barnacle Balanus glandula
Balanus glandul Upwelling Reproductive sweepstakes
2015/12/11
Dispersal and recruitment are central processes that shape the geographic and temporal distributions of populations of marine organisms. However, significant variability in factors
such as reproducti...
Seascape genetics along a steep cline: using genetic patterns to test predictions of marine larval dispersal
steep cline genetic patterns
2015/12/11
Coupled biological and physical oceanographic models are powerful tools for studying
connectivity among marine populations because they simulate the movement of larvae
based on ocean currents and la...
Genetic Structure Among 50 Species of the Northeastern Pacific Rocky Intertidal Community
Northeastern Pacific Rocky Community
2015/12/11
Comparing many species’ population genetic patterns across the same seascape can identify species with different levels of
structure, and suggest hypotheses about the processes that cause such variat...
A Method for Detecting Population Genetic Structure in Diverse, High Gene-Flow Species
Diverse High Gene-Flow Species
2015/12/11
Detecting small amounts of genetic subdivision across geographic space remains a persistent challenge. Often a failure to
detect genetic structure is mistaken for evidence of panmixia, when more powe...
Marine reserves help preserve genetic diversity after impacts derived from climate variability: Lessons from the pink abalone in Baja California
Marine reserve Overfishing
2015/12/11
Genetic diversity is crucial for the adaptation of exploited species like the pink abalone
(Haliotis corrugata), faced with threats from climate change, overfishing and impacts
associated with aquac...