A clonal analysis of tergite development in Drosophila of Ultraabdominal and paradoxical genotypes☆
[摘要] ThedevelopmentalparametersofhomeoticsecondabdominalanlagecellsinflieswithUltraabdominalandparadoxicalgenotypesarecomparedwiththoseofnormalsecondabdominalanlagecellsthroughtheuseofinducedmitoticrecombinationtomarktheclonaldescendantsofsingleanlagecells.Homeoticandnormalsecondabdominalanlagecellsshowthesamepatternofmitoticactivityduringdevelopment.ThehomeoticsecondabdominalanlagecellswithUltraabdominalgenotypeproliferatetothesameextentasnormalanlagecellsduringhemitergiteformation.However,theproliferationofhomeoticsecondabdominalanlagecellswithparadoxicalgenotypeisdecreasedduetothefailureofsomedaughtercellseithertodivideortodifferentiatenormally.ThenumberofanlagecellsinahomeoticsecondabdominalhistoblastwithUltraabdominalgenotypeisslightlysmallerandmorevariablethanthatinanormalsecondabdominalhistoblast.Thenumberofanlagecellsinahomeoticsecondabdominalhistoblastwithparadoxicalgenotypeismuchsmallerandmuchmorevariablethanthatinanormalsecondabdominalhistoblast.Theseresultsarediscussedinrelationtomechanismsgoverningcelldetermination.Inaddition,someaspectsofpatternformationinincompletehomeoticsecondabdominalhemitergitesarepresentedanddiscussed.
[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]
