Nyob rau hauv meiosis, muaj ob qhov kev faib tawm nuclear uas ua rau plaub lub nuclei thiab feem ntau yog plaub tus ntxhais, txhua tus muaj ib nrab ntawm cov chromosomes raws li niam txiv cell. Thawj cais homologs, thiab qhov thib ob zoo li mitosis- cais chromatids rau hauv ib tus neeg chromosomes.
Dab tsi sib cais hauv thawj qhov kev faib meiosis?
Tus txheej txheem ntawm meiosis muaj ob lub cellular division: Thawj meiotic division cais pairs ntawm homologous chromosomes kom halve tus chromosome tooj (diploid → haploid) Tus thib ob meiotic division cais tus muam chromatids (tsim los ntawm replication ntawm DNA thaum interphase)
Dab tsi sib cais thaum txhua qhov kev faib meiosis?
Homologue khub cais thaum thawj puag ncig ntawm cell faib, hu ua meiosis I. Muam chromatids cais thaum lub sij hawm thib ob, hu ua meiosis II. Txij li thaum kev faib cell tshwm sim ob zaug thaum lub sij hawm meiosis, ib lub cell pib tsim tau plaub gametes (qe lossis phev).
Dab tsi yog sib cais thaum lub sij hawm faib thib ob ntawm meiosis?
Meiosis II zoo ib yam li mitosis hauv txhua tus chromosome muaj ob tus muam chromatids txuas ntawm lub centromere. Lub hom phiaj ntawm meiosis II yog cais tus muam chromatids.
Dab tsi cais meiosis thiab mitosis?
Mitosis cuam tshuam nrog kev faib cov hlwb hauv lub cev, thaum meiosis koom nrog faib cov hlwb sib deev. … Ob tug ntxhais hlwb raug tsim tom qab mitosisthiab cytoplasmic division, thaum plaub tus ntxhais hlwb raug tsim tom qab meiosis. Cov ntxhais hlwb uas tshwm sim los ntawm mitosis yog diploid, thaum cov uas tshwm sim los ntawm meiosis yog haploid.
