返回
Gene Regulation and Development：基因调控和发育

Gene Regulation and Development：基因调控和发育

ID：36664814

大小：7.03 MB

页数：78页

时间：2019-05-10

Gene Regulation and Development：基因调控和发育_第1页
Gene Regulation and Development：基因调控和发育_第2页
Gene Regulation and Development：基因调控和发育_第3页
Gene Regulation and Development：基因调控和发育_第4页
Gene Regulation and Development：基因调控和发育_第5页
资源描述：

《Gene Regulation and Development：基因调控和发育》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、GeneRegulationandDevelopmentMakingof theComplexLivingthingsInthedevelopmentofmulticellorganisms,asingle-cellzygotegivesrisetomanydifferentcelltypes.Eachtypehasdifferentstructure,undertakingdifferentchemicalandbiologicreactionsandperformscorrespondingfunctions.Allthesee

2、ventsarecontrolledbysetsofgenesinthecellandinfluencedbysurroundingstimuli.BodysystemofmulticellorganismsCellsofsimilartypesareorganizedintotissuesTissueswithassociatedfunctionintoorgansOrgansofassociatedfunctionintoorgansystemsOrgansystemscoordinatelytosupportthewholeo

3、rganismProcessofembryonicdevelopmentmustgiverisenotonlytothecellsofdifferenttypesbutalsotohigher-levelstructuresandcoordinatedfunctions.Howlifebegin…Anorganismarisesfromafertilizedeggastheresultofthreeinterrelatedprocesses:celldivision,celldifferentiation,andcellmorpho

4、genesis.Duringdevelopment,cellsbecomespolarized,startsdivideunevenly,reprogramsgeneexpressionandbecomespecializedinstructureandfunction,aprocesscalleddifferentiation.Theprocessesofmorphogenesisisformingofshapes,givecells,tissuesandorganstheirpropershapetofittheircorres

5、pondingfunctions.Alltheseprocessesarepartofdevelopment.EmbryonicDevelopmentFertilizationresultsinazygoteandtriggersembryonicdevelopmentPlasmamembraneTailMiddle pieceNeckHeadNucleusAcrosomeMitochondrion(spiralshape)Onlyonespermwillpenetratethishumaneggtoinitiatetheferti

6、lizationThereisaselectionofspermqualityThesperm approaches theegg1234Thesperm’sacrosomalenzymes digestthe egg’sjelly coatProteinsonthe spermheadbind toeggreceptors5Thesperm nucleus enters theegg cytoplasmTheplasmamembranes ofspermandeggfuse6Afertilization envelopeforms

7、SPERMNucleusAcrosomePlasma membraneSperm headAcrosomalenzymesJelly coat(ZonaPellucida)VitellinelayerPlasma membraneCytoplasmEGGCELLReceptorproteinmoleculesSperm nucleusEgg nucleus7Thenuclei ofsperm andeggfuseZygote nucleusCleavagestartsFertilization ofovumOviductSecond

8、aryoocyteOvulationOvaryBlastocyst(implanted)EndometriumUterusInmammals,fertilizationoccursintheoviduct.Spermfuseswith

当前文档最多预览五页，下载文档查看全文

此文档下载收益归作者所有

当前文档最多预览五页，下载文档查看全文
温馨提示：
1. 部分包含数学公式或PPT动画的文件，查看预览时可能会显示错乱或异常，文件下载后无此问题，请放心下载。
2. 本文档由用户上传，版权归属用户，天天文库负责整理代发布。如果您对本文档版权有争议请及时联系客服。
3. 下载前请仔细阅读文档内容，确认文档内容符合您的需求后进行下载，若出现内容与标题不符可向本站投诉处理。
4. 下载文档时可能由于网络波动等原因无法下载或下载错误，付费完成后未能成功下载的用户请联系客服处理。