![Dab tsi yog qhov chaw kuaj xyuas tseem ceeb tshaj plaws hauv lub voj voog ntawm tes? Dab tsi yog qhov chaw kuaj xyuas tseem ceeb tshaj plaws hauv lub voj voog ntawm tes?](https://i.answers-medical.com/preview/medical-health/13900562-what-is-the-most-important-checkpoint-in-the-cell-cycle-j.webp)
Video: Dab tsi yog qhov chaw kuaj xyuas tseem ceeb tshaj plaws hauv lub voj voog ntawm tes?
![Video: Dab tsi yog qhov chaw kuaj xyuas tseem ceeb tshaj plaws hauv lub voj voog ntawm tes? Video: Dab tsi yog qhov chaw kuaj xyuas tseem ceeb tshaj plaws hauv lub voj voog ntawm tes?](https://i.ytimg.com/vi/ufuc3YdL3Tk/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
G1 tus tshev cov qhov tseem ceeb tshaj plaws yog ntawm tes.
Ua li no, qhov chaw txheeb xyuas twg yog qhov tseem ceeb tshaj?
Qhov G1 checkpoint yog qhov tseem ceeb tshaj plaws vim nws nyob ntawd qhov twg ntawm tes "txiav txim siab" seb yuav faib los tsis faib.
Qhov thib ob, lub hom phiaj ntawm 3 lub chaw kuaj xyuas xov tooj yog dab tsi? Sab hauv Kuaj xyuas Thaum lub sij hawm Xovtooj Cycle: Cov ntawm tes voj voog yog tswj ntawm peb qhov chaw kuaj xyuas . Kev ncaj ncees ntawm DNA raug tshuaj xyuas ntawm G1 tus tshev . Kev tsim cov chromosome zoo yog ntsuas ntawm G2 tus tshev . Txuas ntawm txhua kinetochore rau ntxaiv fiber ntau tau ntsuas ntawm M. tus tshev.
Ua qhov no hauv kev txiav txim siab, cov chaw kuaj xyuas yog dab tsi thiab vim li cas lawv thiaj li tseem ceeb hauv lub voj voog ntawm tes?
Cov cell cycle checkpoints luaj a tseem ceeb lub luag haujlwm hauv kev tswj hwm los ntawm kev paub txog qhov tsis xws uas tshwm sim thaum lub sijhawm tseem ceeb xws li kev hloov pauv DNA lossis kev sib cais ntawm chromosome, thiab ua rau lub voj voog ntawm tes raug ntes hauv qhov lus teb kom txog thaum kho tsis raug.
Qhov tseem ceeb ntawm qhov chaw txheeb xyuas g1 yog dab tsi?
Qhov khoob 1 ( G1 ): Cov xov tooj ntawm tes nce ntxiv hauv qhov sib txawv 1, tsim RNA thiab sib txuas cov protein. Ib tseem ceeb kev tswj hwm lub voj voog ntawm tes tau qhib rau lub sijhawm no ( G1 Chaw Nres Nkoj ) ua kom ntseeg tau tias txhua yam tau npaj rau kev sib txuas DNA. (Nyem rau ntawm Kuaj xyuas animation, saum toj no.)
Pom zoo:
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Cov theem twg ntawm lub voj voog ntawm tes yog lub xov tooj cua tshaj plaws?
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Cov chaw kuaj xyuas lub voj voog ntawm tes ua lub luag haujlwm tseem ceeb hauv kev tswj hwm los ntawm kev hnov qhov tsis xws luag uas tshwm sim thaum cov txheej txheem tseem ceeb xws li DNA replication lossis chromosome cais, thiab ua rau lub voj voog ntawm tes raug ntes kom txog thaum kho qhov tsis xws luag