Homologue khub sib 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 tshwj xeeb cais thaum lub sijhawm anaphase ntawm meiosis ib?
Thaum anaphase, tus muam chromatids (los yog homologous chromosomes rau meiosis I), yuav sib cais thiab txav mus rau cov ncej ntawm tes, rub los ntawm microtubules. Hauv kev tsis sib haum xeeb, kev sib cais tsis tshwm sim ua rau ob tus muam chromatids lossis homologous chromosomes raug rub mus rau ib tus ncej ntawm tes.
Cov qauv dab tsi cais thaum lub sijhawm meiosis?
Hauv mitosis, muaj kev sib cais ntawm chromatids thaum anaphase. Hauv meiosis muaj anaphase I thiab anaphase II. Hauv anaphase kuv muaj kev sib cais ntawm homologous chromosomes, hauv anaphase II, chromatids yuav cais.
qhov txawv ntawm meiosis 1 thiab meiosis 2 yog dab tsi?
Meiosis yog kev tsim tawm plaub lub noob caj noob ces haploid tus ntxhais los ntawm ib lub xov tooj ntawm niam txiv diploid. … Hauv meiosis II, cov chromosomes no tau muab cais ntxiv mus rau cov muam chromatids. Meiosis Kuv suav nrog kev hla lossis rov ua dua ntawm cov khoom siv caj ces ntawm cov chromosome khub, thaum meiosis II tsis.
Meiosis nrog daim duab yog dab tsi?
Meiosis is a process where aib lub cell faib ob zaug los tsim plaub lub hlwb uas muaj ib nrab ntawm cov ntaub ntawv keeb kwm yav dhau los . Cov hlwb no yog peb cov poj niam cev xeeb tub - phev hauv txiv neej, qe hauv poj niam. … Meiosis tsim peb cov qe ntshav los yog gametes? (qe hauv poj niam thiab phev hauv txiv neej).
