Video: Yuav ua li cas operon tswj gene qhia?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kab mob gene yog feem ntau pom nyob rau hauv cov neeg ua haujlwm . Cov noob hauv ib operon yog sau ua ib pab pawg thiab muaj ib tug txhawb nqa. Txhua ua haujlwm muaj cov txheej txheem DNA tswj hwm, uas ua raws li qhov chaw sib txuas rau kev tswj hwm cov proteins uas txhawb lossis cuam tshuam kev sau ntawv.
Ntxiv rau qhov no, lac operon tswj cov kev qhia gene li cas?
Ib tug repressor protein khi tus neeg teb xov tooj (tswj) cheeb tsam upstream ntawm lub ua haujlwm tiv thaiv kev sau ntawv. Thaum twg lactose yog tam sim no sab nraum lub cell, nws hla lub cell membrane thiab ua raws li ib tug inducer ntawm lub ua haujlwm . CAP txhawb nqa RNA polymerase transcription ntawm noob ua rau muaj kev nce ntxiv lac operon kev qhia.
Tom qab, lo lus nug yog, dab tsi yog lub luag haujlwm ntawm operon? Operaon : Ib txheej ntawm cov noob tau sau tseg raws li kev tswj hwm ntawm tus neeg teb xov tooj gene. Tshwj xeeb tshaj yog, ib ua haujlwm yog ib ntu ntawm DNA uas muaj cov noob uas nyob ib sab nrog rau cov noob caj noob ces, cov noob neeg ua haujlwm, thiab cov noob tswj hwm. Ib ua haujlwm yog li no lub luag haujlwm ntawm kev hloov pauv thiab kev tswj caj ces.
Ib tug kuj tseem nug, ua li cas operons tswj cov noob qhia hauv prokaryotes?
Gene qhia hauv prokaryotes yog loj tswj ntawm lub ntsiab lus ntawm transcription. Ib tug repressor khi rau ib tug neeg teb xov tooj, ib tug DNA ib theem zuj zus nyob rau hauv lub cheeb tsam kev tswj ntawm lub RNA polymerase binding site nyob rau hauv lub txhawb nqa thiab thawj structural noob , yog li lub cev thaiv cov ntaub ntawv ntawm cov no cov neeg ua haujlwm.
Yuav ua li cas cov kev cai ntawm noob qhia khaws cia nyob rau hauv cov kab mob?
Prokaryotic transcription thiab txhais lus tshwm sim ib txhij nyob rau hauv lub cytoplasm, thiab kev cai tshwm sim nyob rau theem transcriptional. Eukaryotic gene qhia yog tswj thaum transcription thiab RNA ua, uas tshwm sim nyob rau hauv lub nucleus, thiab thaum lub sij hawm protein ntau txhais lus, uas tshwm sim nyob rau hauv lub cytoplasm.
Pom zoo:
Kuv yuav ua li cas qhia XY kev tswj hwm hauv ArcGIS?
Cov txheej txheem hauv ArcMap, right-click the layer of interest, and select Edit Features > Start Editing. Ntawm Editor toolbar, nyem qhov Kho kom raug Vertices cuab tam. Nyem lub cuab yeej Sketch Properties.. Lub qhov rais Kho kom raug Sketch Properties qhib, thiab XY kev tswj hwm ntawm kab ntsug tau teev nyob rau hauv kab X thiab Y
Yuav ua li cas gene qhia hauv E coli tswj?
Txawm li cas los xij, ntau txoj cai gene tshwm sim nyob rau theem ntawm kev hloov pauv. Cov kab mob muaj cov txheej txheem tswj hwm tshwj xeeb uas tswj xyuas seb ib lub noob twg yuav raug hloov mus rau hauv mRNA. Feem ntau, cov molecules no ua los ntawm kev khi rau DNA ze ntawm cov noob thiab pab lossis thaiv cov enzyme transcription, RNA polymerase
Yuav ua li cas cov protein tswj cov kev qhia gene?
Eukaryotic gene qhia yog tswj thaum lub sij hawm transcription thiab RNA ua, uas tshwm sim nyob rau hauv lub nucleus, thiab thaum lub sij hawm lub protein txhais lus, uas tshwm sim nyob rau hauv lub cytoplasm. Cov kev cai ntxiv tuaj yeem tshwm sim los ntawm kev hloov pauv tom qab kev hloov pauv ntawm cov protein
Yuav ua li cas ib tug gene npog qhov kev qhia ntawm lwm gene?
Txawm hais tias lawv tau txheeb xyuas nws tus kheej, cov noob tuaj yeem cuam tshuam txog qib ntawm cov khoom lag luam gene xws li kev qhia ntawm ib qho allele rau ib lub noob ntsej muag lossis hloov kho qhov kev qhia ntawm ib qho allele rau cov noob sib txawv. Qhov no hu ua epistasis
Yuav ua li cas morphogenesis cuam tshuam los ntawm kev tswj cov noob qhia?
Gene qhia cuam tshuam morphogenesis los ntawm kev tswj cov kab mob dab tsi yuav tig tawm zoo li. Kev sib txawv ntawm tes txawv li cas ntawm morphogenesis? Kev sib txawv ntawm tes yog thaum qia hlwb ua ntau hom hlwb xws li: tawv nqaij, ntshav, pob txha, thiab lwm yam. Morphogenesis yog kev loj hlob ntawm lub cev