The early development of mesothoracic compartments in Drosophila: An analysis of cell lineage and fate mapping and an assessment of methods
[摘要] TheresultsfromthreemethodsofstudyingthecelllineageofearlyDrosophiladevelopmentarereported:clonalanalysis,theMinutetechnique,andgynandromorphfatemapping.Weconcludethatbyaboutonedivisionafterblastodermanteriorandposteriorgroupsofcellsinthemesothoraxareseparated,asarethegroupsofcellsthatgeneratedifferentsegments.Clonesproducedbyirradiationofeggsaged4±2hrdocrossfromwingtoleg,sothatthesetwodiscsshareacommonoriginuntilatleasttwodivisionsafterblastoderm.Thenumberofepidermalcellsinthewingdiscofthenewlyhatchedlarvaisestimatedatabout20cells.Gynandromorphfatemappingisdiscussedindetail.Itisconcludedthatsturtdistancesbetweenlandmarksarenotonlydeterminedbydistanceapartoftheirprogenitorcellsatblastoderm,butarestronglydependentoncompartmentalisationandotheraspectsofpostembryonicdevelopment.Theconsequencesofthisarediscussed.Wediscusstheevidencethatanteriorandposteriorgroupsofwingcellsmaybeadjacentatblastoderm.
[发布日期] [发布机构]
[效力级别] [学科分类] 生物科学（综合）
[关键词] [时效性]
