Video: Yuav ua li cas DNA replication ua kom muaj kev txuas ntxiv ntawm daim ntawv thiab kev ua haujlwm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Piav li cas DNA replication ua kom muaj kev txuas ntxiv ntawm daim ntawv thiab kev ua haujlwm los ntawm ib tiam cell mus rau lwm tiam. Rov ua dua ua 2 zoo tib yam DNA strands. Txhua tus xeeb leej xeeb ntxwv muaj tib yam daim ntawv thiab muaj nuj nqi ntawm niam txiv cell.
Ib yam li ntawd, tib neeg nug, ua li cas replication tshwm sim sai heev?
Hauv kev sib piv, eukaryotic tib neeg DNA replicates ntawm tus nqi ntawm 50 nucleotides ib ob. Hauv ob qho xwm txheej, rov ua dua tshwm sim sai sai vim muaj ntau yam polymerases ua tau synthesize ob txoj hlua tshiab tib lub sijhawm los ntawm kev siv txhua qhov tsis muaj kab mob los ntawm thawj DNA ob lub helix raws li ib template.
Ib tug kuj yuav nug, dab tsi yog lub hauv paus chiv keeb ntawm txhua strand nyob rau hauv lub replicated DNA? Cov rov ua dua txheej txheem cia siab rau qhov tseeb tias txhua txoj hlua ntawm DNA tuaj yeem ua tus qauv rau duplication. DNA replication pib ntawm cov ntsiab lus tshwj xeeb, hu ua keeb kwm , qhov twg DNA ob lub helix yog unwound. Ib qho enzyme hu ua DNA polymerase tom ntej no pib replicating lub DNA los ntawm kev sib piv cov hauv paus rau qhov qub txoj hlua.
Raws li txoj cai, nyob rau theem cell twg DNA replicate quizlet?
Thaum lub sij hawm twg ntawm lub voj voog ntawm tes puas DNA duplication, lossis replication, tshwm sim? Interphase . DNA replicates thaum lub sij hawm interphase . Cov txheej txheem no muab txhua tus ntxhais tshiab ntawm tes nrog tag nrho cov khoom siv caj ces.
Yuav ua li cas yog tias DNA rov ua yuam kev?
Ua yuam kev thaum Rov ua dua . DNA replication yog cov txheej txheem raug heev, tab sis kev ua yuam kev tuaj yeem tshwm sim qee zaus thaum a DNA polymerase ntxig a yuam kev puag. Kev ua yuam kev tsis raug qee zaum yuav ua rau muaj qhov tshwm sim loj, xws li mob qog noj ntshav. Hloov pauv: Hauv qhov kev sib tham sib tham no, koj tuaj yeem "kho" a DNA strand thiab ua rau muaj kev hloov pauv.
Pom zoo:
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