Teb: Qhov pib ntawm DNA replication tshwm sim nyob rau hauv ob kauj ruam. Ua ntej, ib lub npe hu ua pib cov protein ua kom luv luv ntawm DNA ob helix. Tom qab ntawd, cov protein hu ua helicase txuas rau thiab rhuav tshem cov hydrogen bonds ntawm lub hauv paus ntawm DNA strands, yog li rub tawm ob txoj hlua.
DNA replication pib Brainly qhov twg?
DNA replication tshwm sim thaum S-theem ntawm interphase. DNA replication (DNA amplification) kuj tuaj yeem ua hauv vitro (xws li, sab nraud ntawm tes). DNA polymerases cais tawm ntawm cov hlwb thiab cov khoom tsim DNA primers tuaj yeem siv los pib DNA synthesis ntawm cov kab ke paub hauv cov qauv DNA molecule.
Thaum twg yuav tsum DNA rov tshwm sim?
DNA replication tshwm sim thaum lub sijhawm S (theem Synthesis) ntawm lub voj voog ntawm tes, ua ntej mitosis thiab cell division. Cov cai ntawm kev sib koom ua ke yog qhov tseem ceeb rau cov txheej txheem ntawm kev rov ua dua tshiab. DNA replication tshwm sim thaum DNA tau theej los ua ib qho zoo tib yam molecule ntawm DNA.
DNA replication pib qhov twg?
Kev rov ua dua tshiab tshwm sim hauv peb kauj ruam tseem ceeb: qhib ob lub helix thiab kev sib cais ntawm DNA strands, priming ntawm template strand, thiab sib dhos ntawm cov DNA tshiab. Thaum sib cais, ob txoj hlua ntawm DNA ob lub helix uncoil ntawm ib qho chaw tshwj xeeb hu ua lub hauv paus.
Thaum DNA rov pib ua li cas?
DNAreplication pib ntawm cov ntsiab lus tshwj xeeb, hu ua keeb kwm, qhov twg DNA ob chav helix tsis raug mob. Ib ntu luv ntawm RNA, hu ua primer, yog tom qab ua kethiab ua raws li qhov pib ntawm DNA synthesis tshiab. Ib qho enzyme hu ua DNA polymerase tom ntej no pib rov ua dua DNA los ntawm kev sib piv cov hauv paus rau tus thawj strand.
