Zoo li kev sib cais, kev ywj pheej ntawm kev sib cais tshwm sim thaum lub sij hawm meiosis, tshwj xeeb hauv prophase I thaum cov chromosomes kab nyob rau hauv random orientation raws metaphase phaj.
Yuav muaj kev ywj pheej nyob qhov twg?
Independent assortment in meiosis tshwm sim nyob rau hauv eukaryotes thaum metaphase I ntawm meiotic division. Nws tsim ib gamete nqa cov chromosomes sib xyaw. Gametes muaj ib nrab ntawm cov chromosomes li niaj zaus hauv diploid somatic cell.
Kev ywj pheej Assortment yog dab tsi thiab nws tshwm sim nyob qhov twg?
Lub hauv paus ntsiab lus ntawm Kev ywj pheej Assortment piav qhia yuav ua li cas cov noob sib txawv ntawm nws tus kheej sib cais los ntawm ib leeg thaum cov hlwb tsim tawm. … Thaum lub sij hawm meiosis, cov khub ntawm homologous chromosome tau muab faib ua ib nrab los tsim cov hlwb haploid, thiab qhov kev sib cais, lossis kev sib txawv, ntawm homologous chromosomes yog random.
Puas muaj kev ywj pheej tshwm sim hauv metaphase lossis anaphase?
Kho kuv yog tias kuv tsis raug, tab sis kev ywj pheej assortment yog metaphase 1 thiab txoj cai ntawm kev cais tawm tuaj yeem tshwm sim hauv anaphase 1. Thaum lub sijhawm metaphase, cov chromosomes kab hauv nruab nrab. txoj kev ntawm homolog chromosomes kab nyob rau hauv nruab nrab yog kiag li random, yog li nws yog ywj siab ntawm ib leeg.
Puas Muaj Kev ywj pheej tshwm sim hauv meiosis 1 lossis meiosis 2?
Homologous chromosomes cais hauv meiosis I. Muam chromatidscais in meiosis II. Kev ywj pheej assortment ntawm cov noob yog vim qhov random orientation ntawm khub ntawm homologous chromosomes nyob rau hauv meiosis I. Chiasmata tsim ntawm non-viv ncaus chromatids tuaj yeem ua rau muaj kev sib pauv ntawm alleles.
