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1、华大基因学院《文献阅读》课程论文(设计)评语成绩评阅人学校：塔里木大学层次：本科年级：2015级专业：生物技术姓名：杜诗熠学号：7011211225提交日期：2014年7月3日华大基因学院制表EvolutionofOlfactoryinInsectsShiyiDu(CollegeofLifeScience,Tarimuniversity,xinjiang,China,843300)AbstractInsectsarethelargestanimalsonearth，whichInalmostevery
2、cornerallovertheworld.Atpresent，Therearemanydifferentkindsofinsects.Onthescientificclassification,insectsareincludedinthearthropoda.Theyhavethecommonfeaturesofthearthropods.Insectshavedevelopedcomplicatedolfactionsystemsduringthelongevolutionprogress.As
3、theimportantcomponentsofinsectolfactionsystems，odorantbindingproteins(OBPs)andolfactoryreceptors(ORs)mainlycombinewiththevolatilitysignalmoleculeintheperipheryandtransferthesignaltothesecondmessenger.Thestructure，function，expressionandevolutionofOBPsand
4、ORsareimportanttostudytherelationshipbetweeninsectbehaviorandevolution.Keywords:odorantbindingproteins;olfactoryreceptor;structure;function;evolutionIntroductionInsectbodyisdividedintohead,thoraxandabdomen.Headisthemostinfrontofanindividualsegmentinsect
5、body,madeupbyseveralsegment,theouterwallishard,formtheheadandshell.Feedingandthefeeloftheheadasthecenterandonthefrontoftheheadwithapairofantennae,belowisthemouth,withthreepairsofmouthpartsappendagesand1fortentacles,usuallyonbothsideshaveapairofbigcompou
6、ndeye,headoftenhasonetothreesmallmonocular.Thoraxiscomposedofthreesegment,bytheformerinturncalledbackintheprothorax，mesothoraxandmetathorax.Eachsegmentswithapairofappendages,knownasthethoracicfeet.thoracicfeetisdividedintosegments,coxa,trochanter,femur,
7、tibia,tarsusandpretarsus.pretarsusisusuallydividedintofivetarsites,sometimeswithapairofclaws.thoracicfeetoftenspecialized,inordertobettercompletesuchasdigging,jumping,swimmingorcapturetasks,etc.Firstchestsectionisknownasthechestonthebackofthepronotum,us
8、uallyspecialreinforcement.Onthebackoftheothertwochestsectionusuallyeachwithapairofwings.Beforethebeetlehasatrianglebetweenthewingsofthenail.Chestisthecenterofthemovement,andhastheabilityof3feet.Insecthasimportantorgansintheabdome
