Lub sijhawm prophase, lub nucleus ploj, spindle fibers daim ntawv, thiab DNA condenses rau hauv chromosomes (tus muam chromatids). Thaum lub sij hawm metaphase, tus viv ncaus chromatids ua raws txoj kab nruab nrab ntawm lub cell los ntawm kev txuas lawv cov centromeres rau cov spindle fibers.
Puas muaj nucleus hauv prophase?
Nyob rau hauv prophase, lub complex ntawm DNA thiab cov proteins muaj nyob rau hauv lub nucleus, hu ua chromatin, condenses. Cov chromatin coils thiab dhau los ua compact, ua rau tsim cov chromosomes pom. … Cov viv ncaus chromatids yog khub ntawm cov ntawv luam zoo tib yam ntawm DNA koom nrog ntawm qhov chaw hu ua centromere.
Lub nucleus nyob qhov twg hauv metaphase?
Metaphase yog ib theem hauv lub voj voog ntawm tes uas txhua yam khoom siv caj ces yog condensing rau hauv chromosomes. Cov chromosomes ces pom tau. Thaum lub sijhawm no, cov nucleus ploj mus thiab cov chromosomes tshwm sim hauv cytoplasm ntawm lub xovtooj.
Puas muaj nucleolus hauv metaphase?
Ntawm metaphase, lub mitotic spindle tsim ib qho dav dav tag nrho embedded nyob rau hauv lub nucleolus. Lub nucleolus tau muab cais ua ob pawg discreet txuas los ntawm ib pawg tuab ntawm microtubules raws li cov spindle elongated.
Lub nucleus nyob rau hauv interphase nyob qhov twg?
Lub interphase nucleus yog ib yam ntawm eukaryotic nucleus, nrog chromatin txuas rau hauv daim nyias nyias ntawm lub hnab ntawv nuclear. Ib tug nucleolus tshwm sim nyob rau hauv lubnucleus.
