Dab tsi yog cov xwm txheej uas cov hlwb mus dhau thaum lawv loj hlob thiab sib faib?
Dab tsi yog cov xwm txheej uas cov hlwb mus dhau thaum lawv loj hlob thiab sib faib?

Video: Dab tsi yog cov xwm txheej uas cov hlwb mus dhau thaum lawv loj hlob thiab sib faib?

Video: Dab tsi yog cov xwm txheej uas cov hlwb mus dhau thaum lawv loj hlob thiab sib faib?
Video: Tswv Yexus lub neej thaum pib txug thaum xaus 2024, Lub rau hli ntuj
Anonim

Xovtooj uas loj hlob thiab faib mus los ntawm kev rov ua dua cov xwm txheej hu ua cell division cycle (or ntawm tes lub voj voog). Thaum thawj theem (G1), cov cell loj hlob thiab npaj rau kev hloov pauv DNA, uas tshwm sim hauv S tom ntej theem.

Ib yam li ntawd, tib neeg nug, dab tsi yog cov xwm txheej uas cov hlwb mus dhau thaum lawv loj hlob thiab faib cov lus nug?

Cov ntawm tes cycle yog a series ntawm cov xwm txheej uas cov hlwb mus dhau thaum lawv loj hlob thiab faib . Thaum lub sij hawm ntawm tes cycle, ib cell loj hlob , npaj rau kev faib, thiab faib tsim tau ob tug ntxhais hlwb , txhua tus uas ces pib lub voj voog dua.

Thaum twg theem g1 S thiab g2 tshwm sim? Interphase

Qhov thib ob, qhov ntev tshaj plaws ntawm lub voj voog ntawm tes yog dab tsi?

G1 feem ntau yog lub sijhawm ntev tshaj plaws ntawm lub voj voog ntawm tes. Qhov no tuaj yeem piav qhia los ntawm qhov tseeb tias G1 ua raws cell faib hauv mitosis cov tsos mob ; G1 sawv cev rau thawj lub caij nyoog rau cov hlwb tshiab yuav tsum loj hlob. Cov cell feem ntau nyob hauv G1 txog li 10 teev ntawm 24 teev tag nrho ntawm cov xov tooj ntawm tes.

Thaum lub sij hawm dab tsi ntawm lub voj voog puas cell division tshwm sim?

Lub voj voog ntawm tes muaj ob theem tseem ceeb: interphase thiab theem mitotic (Daim duab 1). Thaum interphase , cell loj hlob thiab DNA tau rov ua dua. Thaum lub sij hawm mitotic theem, cov replicated DNA thiab cytoplasmic ntsiab lus yog sib cais, thiab lub cell faib.

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