Metaphase yog ib theem thaum lub sijhawm kev faib cell (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 hauv nruab nrab ntawm lub cell faib.
Dab tsi tshwm sim ntawm metaphase hauv mitosis?
Thaum lub sijhawm metaphase, lub kinetochore microtubules rub cov viv ncaus chromatids rov qab mus txog thaum lawv ua raws li txoj kab nruab nrab ntawm tes, hu ua lub dav hlau equatorial. Muaj qhov chaw kuaj xyuas tseem ceeb hauv nruab nrab ntawm mitosis, hu ua metaphase checkpoint, thaum lub sij hawm lub cell kom paub meej tias nws npaj txhij los faib.
Yuav ua li cas hauv metaphase ntawm mitosis thiab meiosis?
Metaphase yog ib theem ntawm lub voj voog ntawm tes uas tshwm sim hauv ob qho tib si mitosis thiab meiosis cell division processes. Thaum lub sij hawm metaphase nyob rau hauv mitosis thiab meiosis, cov chromosomes condense thiab lawv pom thiab paub qhov txawv thaum lub sij hawm kev sib raug zoo ntawm qhov chaw ntawm lub cell faib, tsim ib tug metaphase phaj nyob rau hauv nruab nrab ntawm lub cell.
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 hauvmeiosis I.
mitosis sau metaphase theem yog dab tsi?
Ib theem ntawm mitosis hauv lub voj voog eukaryotic cell nyob rau hauv uas chromosomes nyob rau hauv lawv thib ob-feem ntau condensed thiab coiled theemyog hu ua metaphase. Nqa cov ntaub ntawv caj ces, ua raws li qhov sib npaug ntawm lub xovtooj ua ntej muab sib cais rau hauv txhua tus ntawm ob tus ntxhais lub hlwb tau ua tiav nrog cov chromosomes.
