Thaum cov hlwb sib faib thaum lub sijhawm meiosis, homologous chromosomes tau muab faib ua ntu zus thaum anaphase I, sib cais thiab cais tawm ntawm ib leeg. Qhov no yog hu ua ywj siab assortment. Nws ua rau gametes uas muaj qhov sib xyaw ua ke ntawm chromosomes.
Puas random assortment tshwm sim hauv meiosis 1 lossis 2?
Lub hauv paus ntawm lub cev rau txoj cai ntawm kev ywj pheej nyob hauv meiosis Intawm gamete tsim, thaum homologous khub kab nyob rau hauv kev sib txawv ntawm qhov nruab nrab ntawm tes thaum lawv npaj rau cais.
Puas random assortment tshwm sim hauv metaphase 2?
Qhov no tshwm sim tsuas yog hauv metaphase I Hauv metaphase ntawm mitosis thiab meiosis II, nws yog tus muam chromatids uas kab raws kab ntawm lub cell.… Cov menyuam ntxhais txhua tus muaj ib qho kev sib txawv ntawm chromosomes, nrog rau ib qho los ntawm txhua khub niam txiv. Ob tug ntxhais hlwb mus rau meiosis II.
Kev sib cais sib cais nyob qhov twg hauv meiosis?
Chromosome segregation tshwm sim ntawm ob theem sib cais thaum lub sij hawm meiosis hu ua anaphase I thiab anaphase II (saib daim duab meiosis).
Dab tsi yog qhov sib txawv hauv meiosis?
Thaum lub sijhawm 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. Qhov no txhais tau tias tias tag nrho cov niam txiv chromosomes yuav tsis raug muab cais ua ib lub cell, thaum tag nrho cov chromosomes niam txiv tau muab cais ua lwm yam
