学科分类
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9 个结果
  • 简介:DNAbarcodingisapowerfulapproachforcharacterizingspeciesoforganisms,especiallythosewithalmostidenticalmorphologicalfeatures,therebyhelpingtotoestablishphylogeneticrelationshipsandrevealevolutionaryhistories.Inthisstudy,wechosea648-bpsegmentofthemitochondrialgene,cytochromecoxidasesubunit1(COI),asastandardbarcoderegiontoestablishphylogeneticrelation-shipsamongbrineshrimp(Artemia)speciesfrommajorhabitatsaroundtheworldandfurtherfocusedonthebiodiversityofArtemiaspeciesinChina,especiallyintheTibetanPlateau.SamplesfromfivemajorsaltlakesoftheTibetanPlateaulocatedataltitudesover4,000mshowedcleardifferencesfromotherArtemiapop-ulationsinChina.Wealsoobservedtwoconsistentaminoacidchanges,153A/Vand183L/F,intheCOIgenebetweenthehighandlowaltitudespeciesinChina.Moreover,indelsintheCOIsequencewereidentifiedincystandadultsamplesuniquetotheCoQenpopulationfromtheTibetanPlateau,demonstratingtheneedforadditionalinvestigationsofthemitochondrialgenomeamongTibetanArtemiapopulations.

  • 标签: 系统发育分析 DNA 卤虫 细胞色素C氧化酶 线粒体基因组 生物物种
  • 简介:TheBeijingGenomicsInstitute(BGI)ofChineseAcademyofSciences(CAS)wasofficiallyfoundedinDecember2003.Itspredecessor,BeijingHuadaGenomicsResearchCenter,haspresentedsignificantcontributionstothedevelopmentoflifesciencesinChinabyitsexcellentscientificinnovationsandachievementsinthelastfiveyears.

  • 标签: 中国科学院 生命科学 北京基因组学研究所 创新 2003年 SARS
  • 简介:Allelefrequenciesfor15shorttandemrepeat(STR)loci(D8S1179,D21S11,D7S820,CSF1PO,D3S1358,TH01,D13S317,D16S539,D2S1338,D19S433,vWA,TPOX,D18S51,D5S818,andFGA)wereobtainedfrom7,636unrelatedindivid-ualsofChineseHanpopulationlivinginQinghaiandChongqing,China.Totally206alleleswereobserved,withthecorrespondingallelefrequenciesrangingfrom0.0001–0.4982.Chi-squaretestshowedthatalloftheSTRlociagreedwiththeHardy-Weinbergequilibrium.Wealsocomparedourdatawithpreviouslypub-lishedpopulationdataofotherethnicsorareas.TheresultsarevaluableforhumanidentificationandpaternitytestinginChineseHanpopulation.

  • 标签: 中国西部 汉族 遗传分析 DNA类型
  • 简介:ItisoutofquestionthatChinahasachievedconsiderableadvancementsinscienceandtechnology.Theworldwidespreadof"MadeinChina"thatgetsonthewesterncountries'nervesisagoodillustration.However,althoughcomparativelybetterthansomeotherdevelopingcountries,wehavetofacethesituationthatscienceandtechnologyinsuchagreatnationasChinaisstillseriouslylaggedbehind,lackinggreatbreakthroughsandtop-rankingmastersandleaders.That'swhywefeeluneasyinfrontofinternationalcolleagues.

  • 标签: 生物学 科学研究 中国 技术创新
  • 简介:Aworkshopon'Chips,ComputersandCrops'washeldinHangzhou,ChinaduringSeptember26-27,2008.ThemainobjectiveoftheworkshopwastobringtogetherChinaandUKscientistsfrommathematics,bioinformaticsandplantmolecularbiologycommunitiestoexchangeideas,enhanceawarenessofeachothers’fields,exploresynergismsandmakerecommendationsonfruitfulfuturedirectionsincropscience.Herewedescribethecontributionstotheworkshop,andexaminesomeconceptualissuesthatlieatthefoundationsandfutureofcropsystemsbiology.

  • 标签: 作物科学 英国科学家 计算机 芯片 植物分子生物学 车间
  • 简介:Nineshorttandemrepeat(STR)markersontheXchromosome(DXS101,DXS6789,DXS6799,DXS6804,DXS7132,DXS7133,DXS7423,DXS8378,andHPRTB)wereanalyzedinfourpopulationgroups(Mongol,Ewenki,Oroqen,andDaur)fromInnerMongolia,China,inordertolearnaboutthegeneticdiversity,forensicsuitability,andpossiblegeneticaffinitiesofthepopulations.Frequencyestimates,Hardy-Weinbergequilibrium,andotherparametersofforensicinterestwerecomputed.Theresultsrevealedthattheninemarkershaveamoderatede-greeofvariabilityinthepopulationgroups.Mostheterozygosityvaluesfortheninelocirangefrom0.480to0.891,andthereareevidentdifferencesofgeneticvariabilityamongthepopulations.AUPGMAtreeconstructedonthebasisofthegenerateddatashowsverylowgeneticdistancebetweentMongolandHan(Xi’an)populations.Ourresultsbasedongeneticdistanceanalysisareconsistentwiththeresultsofearlierstudiesbasedonlinguisticsandtheimmigrationhistoryandoriginofthesepopulations.TheminisatellitelociontheXchromosomestudiedherearenotonlyusefulinshowingsignificantgeneticvariationbetweenthepop-ulations,butalsoaresuitableforhumanidentitytestingamongInnerMongolianpopulations.

  • 标签: 中国人 内蒙古 遗传距离 遗传多态性 染色体
  • 简介:TheChina-UKSystemsBiologyWorkshop2005washeldduringJune20-21intheNationalScienceParkofZhejiangUniversity,Hangzhou,China.ItwasorganizedbytheInstituteofBioinformatics,ZhejiangUniversity,andwasinitiatedbyProf.Dr.JunZhu(ZhejiangUniversity)andProf.Dr.JohnFindlay(UniversityofLeeds,UK).TheworkshopwaspartoftheprogramcalledUK-ChinaPartnersinScience,aone-yearcampaignthatwasinitiatedbytheBritishgovernmenttoexploremorecollaborationsbetweenUKandChinaonscienceandtechnology.Itwasattendedalsobyarepresentativeofthisprogram,Mr.FrankYuan,seniorscience&innovationofficer.Theideaoftheworkshopwastobringtogetherexpertswithspecialistsinsystemsbiologyinordertopromotethe"naturalpartnership"betweenscientistsfromthetwocountries.Themostimportantitemsofsystemsbiologyconsideredattheworkshopwere:(1)Newtechnologiesandadvancesinsystemsbiology;(2)Researchdevelopmentsingenomicsandproteomics;(3)Newmethodologiesandsoftwareincomputationalbiology;(4)ResearchcollaborationonsystemsbiologybetweenChinaandUK.

  • 标签: 生物学 生命科学 中国 系统生物学 2005年
  • 简介:Wereportacompletegenomicsequenceofrareisolates(minorgenotype)oftheSARS-CoVfromSARSpatientsinGuangdong,China,wherethefirstfewcasesemerged.Themoststrikingdiscoveryfromtheisolateisanextra29-nucleotidesequencelocatedatthenucleotidepositionsbetween27,863and27,864(referredtothecompletesequenceofBJ01)withinanoverlappedregioncomposedofBGI-PUP5(BGI-postulateduncharacterizedprotein5)andBGI-PUP6upstreamoftheN(nucleocapsid)protein.Thediscoveryofthisminorgenotype,GD-Ins29,suggestsasignificantgeneticeventanddifferentiatesitfromthepreviouslyre-portedgenotype,thedominantformamongallsequencedSARS-CoVisolates.A17-ntsegmentofthisextrasequenceisidenticaltoasegmentofthesamesizeintwohumanmRNAsequencesthatmayinterferewithviralgenomereplicationandtranscriptioninthecytosoloftheinfectedcells.Itprovidesanewavenuefortheexplorationofthevirus-hostinteractioninviralevolution,hostpathogenesis,andvaccinedevelopment.

  • 标签: SARS 冠状病毒 基因序列 基因型