现代生物科技.ppt
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现代生物科技.ppt

现代生物科技.ppt

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III.ChromosomereplicationiscoordinatedwithcelldivisionIII.ChromosomereplicationiscoordinatedwithcelldivisionIII.ChromosomereplicationiscoordinatedwithcelldivisionIII.ChromosomereplicationiscoordinatedwithcelldivisionIV.SomemethodsforDNAstudyNucleicacidshybridizebybasepairingDNAMeltingDenaturedsinglestrandsofDNAcanrenaturetogivetheduplexform.FilterhybrydizationCalculationofTmforaDNAmoleculeMeasurementofnucleicacidconcentrationRestrictionenzymesRestrictionandmodification(限制與修飾)RestrictionenzymesRestrictionfragmentendsSeparationofDNAfragmentsbygelelectrophoresisElectrophoresiscanseparateDNAfragmentsfromoneanother(電泳可將DNA片段彼此分開)Horizontalapparatusfor(agarose)gelelectrophoresismovementofDNAinelectricalfieldGelelectrophoresisforDNAfragmentsPulsed-FieldGelElectrophoresis(PFGE)SouthernblotanalysisPCRreaction(聚合酵素鏈鎖反應)PCRreaction(聚合酵素鏈鎖反應)TheDeterminingbasesequenceofDNAfragments(定序列)Maxam&GilbertSequencingStructureofanα-35S-deoxynucleotidetriphosphateDideoxynucleosidetriphosphates(ddNTP)DNAsequencingwithddNTPsaschainterminatorsProfileofanautomatedsequencingLabellingtheProbes3‘-end-labelling