Thaum lub sijhawm metaphase, lub cell's chromosomes kho lawv tus kheej hauv nruab nrab ntawm lub xovtooj ntawm ib hom cellular "tug of war." Cov chromosomes, uas tau hloov dua tshiab thiab tseem koom nrog ntawm lub hauv paus ntsiab lus hu ua centromere, hu ua tus muam chromatids viv ncaus chromatids Tus muam chromatids yog khub ntawm cov ntawv luam zoo tib yam ntawm DNA koom ntawm qhov taw teshu ua chaw nyob. Thaum lub sij hawm anaphase, txhua khub ntawm chromosomes tau muab cais ua ob qho tib si, chromosomes ywj siab. Cov chromosomes tau sib cais los ntawm cov qauv hu ua mitotic spindle. https://www.nature.com › scitable › definition › anaphase-179
anaphase | Kawm Science ntawm Scitable - Nature
Yuav ua li cas hauv metaphase ntawm mitosis yooj yim?
Metaphase. Chromosomes kab nyob rau ntawm lub phaj metaphase, nyob rau hauv nro los ntawm mitotic spindle. Ob tug viv ncaus chromatids ntawm txhua tus chromosome raug ntes los ntawm microtubules los ntawm cov ncej spindle. Hauv metaphase, tus ntxaiv tau ntes tag nrho cov chromosomes thiab muab lawv tso rau ntawm nruab nrab ntawm lub xovtooj, npaj los faib.
metaphase ntawm mitosis yog dab tsi?
Metaphase yog a theem thaum lub sijhawm txheej txheem ntawm tes faib (mitosis lossis meiosis). Feem ntau, tus neeg chromosomes tsis tuaj yeem pom nyob rau hauv cell nucleus. Txawm li cas los xij, thaum lub sij hawm metaphase ntawm mitosis los yog meiosis cov chromosomes condense thiab ua qhov txawv raws li lawv nyob rau hauv qhov chaw.ntawm kev faib cell.
Yuav ua li cas 3 yam tshwm sim hauv metaphase?
In metaphase, lub mitotic spindle yog tag nrho tsim, centrosomes nyob rau ntawm opposite ncej ntawm lub cell, thiab chromosomes yog lined nyob rau hauv lub metaphase phaj.
Yuav ua li cas hauv metaphase I ntawm meiosis?
Nyob rau hauv metaphase I, cov khub homologous ntawm chromosomes dlhos rau ntawm ob sab ntawm lub phaj equatorial. … Txhua tus ntxhais cell yog haploid thiab tsuas muaj ib pawg chromosomes xwb, los yog ib nrab ntawm tag nrho cov chromosomes ntawm thawj cell. Meiosis II yog ib qho mitotic faib ntawm txhua lub hlwb haploid tsim nyob rau hauv meiosis I.
