Video: Yuav ua li cas gene qhia hauv E coli tswj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Txawm li cas los xij, ntau kev cai gene tshwm sim nyob rau theem ntawm transcription. Kab mob muaj qhov tshwj xeeb kev cai molecules uas tswj seb ib qho tshwj xeeb noob yuav muab sau rau hauv mRNA . Feem ntau, cov molecules no ua los ntawm kev khi rau DNA nyob ze ntawm noob thiab pab los yog thaiv cov transcription enzyme, RNA polymerase.
Ib yam li ntawd ib tug yuav nug, yuav ua li cas cov noob qhia tswj hauv prokaryotes?
Prokaryotic hlwb xwb tswj gene qhia los ntawm kev tswj tus nqi ntawm transcription. Nws thiaj li tau los tswj tau gene qhia los ntawm kev tswj hwm kev hloov pauv hauv lub nucleus, thiab tseem los ntawm kev tswj hwm qib RNA thiab cov protein txhais lus tam sim no sab nraum lub nucleus.
Tom qab ntawd, lo lus nug yog, qhov txawv ntawm qhov zoo thiab qhov tsis zoo ntawm cov kev qhia ntawm noob yog dab tsi? Hauv kev cai tsis zoo ib tug repressor protein khi rau tus neeg teb xov tooj los tiv thaiv a noob los ntawm ua qhia . Hauv kev cai zoo ib qho kev hloov pauv yuav tsum tau khi ntawm tus txhawb nqa kom thiaj li pab tau RNA polymerase los pib kev sau ntawv.
Ib yam li ntawd, ua li cas eukaryotes tswj cov noob qhia?
Gene qhia hauv eukaryotic tshuaj cell yog tswj los ntawm repressors thiab los ntawm transcriptional activators. Zoo li lawv cov prokaryotic counterparts, eukaryotic tshuaj repressors khi rau tej DNA ib ntus thiab inhibit transcription. Lwm cov neeg tawm tsam sib tw nrog cov activators rau kev khi rau cov kev cai tshwj xeeb.
Vim li cas cov kev cai gene tseem ceeb?
Kev cai ntawm noob yog ib tseem ceeb ib feem ntawm kev loj hlob ib txwm muaj. Cov noob raug muab tso rau hauv thiab tawm hauv cov qauv sib txawv thaum lub sij hawm kev loj hlob los ua kom lub hlwb ntawm lub hlwb zoo thiab ua txawv ntawm lub siab cell los yog cov leeg nqaij, piv txwv li. Kev cai ntawm noob kuj tso cai rau cov hlwb kom hnov mob sai rau kev hloov pauv hauv lawv qhov chaw.
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 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 operon tswj gene qhia?
Cov kab mob kab mob feem ntau pom muaj nyob hauv operons. Genes nyob rau hauv ib qho operon tau sau ua ib pab pawg thiab muaj ib tus neeg txhawb nqa. Txhua qhov operon muaj cov txheej txheem DNA tswj hwm, uas ua raws li qhov chaw sib txuas rau cov proteins tswj hwm uas txhawb lossis cuam tshuam kev sau ntawv
Dab tsi yog kev tswj zoo thiab kev tswj tsis zoo hauv gel electrophoresis?
Kev tswj qhov zoo thiab qhov tsis zoo yog cov qauv uas tau siv los lees paub qhov siv tau ntawm gel electrophoresis sim. Cov kev tswj tau zoo yog cov qauv uas muaj cov cim paub txog DNA lossis cov protein thiab yuav txav mus rau ib txoj hauv kev tshwj xeeb ntawm cov gel. Kev tswj tsis zoo yog cov qauv uas tsis muaj DNA lossis 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