Dab tsi tam sim no ua raws meiosis kuv? mitosis.. Ib khub ntawm chromosomes uas muaj cov ntaub ntawv caj ces zoo sib xws thiab los ntawm ntau qhov chaw xws li phev thiab qe.
Yuav ua li cas tom qab meiosis 1?
Meiosis Kuv xaus thaum cov chromosomes ntawm txhua tus khub homologous tuaj txog ntawm tus ncej ntawm tes. Cov microtubules disintegrate, thiab ib tug tshiab nuclear membrane tsim nyob ib ncig ntawm txhua haploid txheej ntawm chromosomes. Cov chromosomes uncoil, tsim chromatin dua, thiab cytokinesis tshwm sim, tsim ob lub hlwb tsis zoo ib yam.
theem twg tam sim tom qab meiosis 1?
Meiosis, muab faib ua meiosis I thiab meiosis II, yog txheej txheem uas lub cell diploid faib nws tus kheej mus rau plaub lub hlwb haploid. Nco ntsoov tias meiosis II tam sim ntawd raws meiosis kuv; DNA replication tsis tshwm sim tom qab meiosis I. Daim ntawv ceeb toom yuav ua li cas cov chromosomes dlhos nyob rau hauv prophase I.
meiosis 1 yog dab tsi?
Interphase yog ua raws li meiosis I thiab tom qab ntawd meiosis II. Meiosis Kuv cais cov chromosome replicated homologous, txhua tus tseem ua los ntawm ob tug viv ncaus chromatids, rau hauv ob tug ntxhais hlwb, yog li txo tus lej chromosome los ntawm ib nrab.
Dab tsi tshwm sim ntawm meiosis tsuas yog tshwm sim thaum meiosis kuv?
Chiasmata tsim thiab crossover tshwm sim ntawm homologous chromosomes, uas tom qab ntawd kab raws cov phaj metaphase hauv tetrads nrog kinetochore fibers los ntawm opposite spindle ncej txuas rau txhua kinetochore ntawm ibhomolog nyob rau hauv ib tug tetrad. Tag nrho cov xwm txheej no tshwm sim hauv meiosis I.
