Thaum lub sij hawm twg ntawm mitosis lub hnab ntawv nuclear pib rov tshwm sim?
Thaum lub sij hawm twg ntawm mitosis lub hnab ntawv nuclear pib rov tshwm sim?

Video: Thaum lub sij hawm twg ntawm mitosis lub hnab ntawv nuclear pib rov tshwm sim?

Video: Thaum lub sij hawm twg ntawm mitosis lub hnab ntawv nuclear pib rov tshwm sim?
Video: Nkauj mos ab ib txhia tub sab 7/25/2018 2024, Kaum ib hlis
Anonim

telophase

Ntxiv rau qhov no, lub sijhawm twg ntawm mitosis puas lub hnab ntawv nuclear rov ua dua?

Micrographs qhia txog kev nce qib theem ofmitosis nyob rau hauv ib lub cell cog. Thaum prophase, thechromosomes condense, lub nucleolus ploj, thiab cov lub hnab ntawv nuclear tawg. Ntawm metaphase, condensed chromosomes (ntxiv)

Tsis tas li ntawd, thaum lub sij hawm twg lub cleavage furrow pib tsim? Cytokinesis yog qhov kawg ntawm kev faib cell. Nyob rau hauv atypical tsiaj mob mitosis , cleavage furrow cov ntaub ntawv ntawm theequatorial cortex tom qab anaphase. Qhov no furrow tom qab nkag mus rau hauv cais ob tus ntxhais cell.

Qhov thib ob, lub nucleus rov tshwm sim nyob rau theem twg?

Hauv telophase, lub xov tooj ntawm tes yuav luag ua tiav, thiab nws pib rov tsim nws cov qauv zoo li cytokinesis (kev faib tawm ntawm cov ntsiab lus ntawm tes) tshwm sim. Lub mitotic spindle yog tawg mus rau hauv nws lub tsev blocks. Ob tug tshiab nuclei daim ntawv, ib qho rau txhua pawg ntawm chromosomes. Nuclear membranes thiab nucleoli rov tshwm sim.

Nyob rau theem twg yog lub hnab ntawv nuclear tsis tuaj?

Piav: Nco ntsoov tias lub nuclear membrane yog disassembled thaum prophase ntawm mitosis. Nws tseem nyob tsis tuaj los ntawm lub sij hawm ntawm mitosis kom txog thaum nws pib toreassemble thaum lub sij hawm telophase. Cov nuclear membrane yog li no tsis tuaj Thaum lub sij hawm prophase, metaphase, andtelophase.

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