Video: Dab tsi yog cov kauj ruam DNA replication?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
DNA replication cov kauj ruam . Muaj peb lub ntsiab cov kauj ruam rau DNA replication : pib, elongation, thiab termination. Txhawm rau kom haum rau hauv lub cell lub nucleus, DNA yog ntim rau hauv nruj coiled qauv hu ua chromatin, uas loosens ua ntej rov ua dua , tso cai rau lub cell rov ua dua machinery nkag mus rau lub DNA strands.
Tib neeg kuj nug, 4 kauj ruam ntawm kev rov ua dua yog dab tsi?
- Kauj ruam 1: Replication Fork Formation. Ua ntej DNA tuaj yeem rov ua dua, ob chav stranded molecule yuav tsum tau "unzipped" rau hauv ob qho tib si.
- Kauj ruam 2: Primer Binding. Txoj kev ua thawj coj yog qhov yooj yim tshaj plaws los rov ua dua.
- Kauj Ruam 3: Elongation.
- Kauj Ruam 4: Tshem tawm.
Tsis tas li ntawd, 6 kauj ruam ntawm DNA replication yog dab tsi? Cov ntsiab lus hauv cov teeb no (6)
- Helicase unzips dna strand.
- Ssbp ua kom strand tsis kaw dua.
- DNA polymerase txuas cov nucleotide tshiab.
- Subunit ntawm DNA polymerase uas pov thawj nyeem dna.
- DNA ligase muab cov hlua khi ua ke.
- DNA molecule cua tuaj.
Ib yam li ntawd ib tug yuav nug, dab tsi yog 3 theem pib ntawm DNA replication?
Cov kab ke ntawm cov hauv paus encodes cov ntaub ntawv genetic. Peb kauj ruam nyob rau hauv tus txheej txheem ntawm DNA replication yog pib, elongation thiab termination.
Tus txheej txheem ntawm DNA replication yog dab tsi?
DNA replication yog cov txheej txheem los ntawm qhov DNA ua ib daim qauv ntawm nws tus kheej thaum lub sij hawm faib cell. Thawj kauj ruam hauv DNA replication yog mus 'unzip' ob chav helix qauv ntawm lub DNA ? molecule. Kev sib cais ntawm ob qho tib si strands ntawm DNA tsim ib 'Y' duab hu ua a rov ua dua 'qab'.
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