Lub hauv paus ntsiab lus ntawm Kev ywj pheej 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…, thiab qhov kev sib cais no, los yog ntau yam, ntawm homologous chromosomes yog random.
Kev ywj pheej ntawm chromosomes tshwm sim li cas?
Thaum cov hlwb sib faib thaum lub sijhawm meiosis, homologous chromosomes tau muab faib rau cov ntxhais, thiab cov chromosomes sib txawv cais lawv tus kheej ntawm ib leeg. Qhov no hu ua ywj siab assortment. Nws ua rau gametes uas muaj qhov sib xyaw ua ke ntawm chromosomes.
Ib qho piv txwv ntawm kev ua haujlwm ywj pheej yog dab tsi?
Piv txwv: Pea xim thiab pea zoo noob noob Cia peb saib ib qho piv txwv ntawm txoj cai ntawm kev ywj pheej assortment. … Thaum Mendel tau ua tus ntoo khaub lig no thiab saib cov xeeb ntxwv, nws pom tias muaj plaub yam sib txawv ntawm cov noob taum: daj thiab puag ncig, daj thiab wrinkled, ntsuab thiab puag ncig, thiab ntsuab thiab wrinkled.
Txoj cai ntawm Kev ywj pheej Assortment yog dab tsi?
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.
Nyob rau theem twg yog qhov kev ywj pheej ntawm chromosomes txiav txim siab?
Kev ywj pheej assortment hauv meiosis tshwm sim hauv eukaryotes thaum metaphase I ntawm meiotic division. Nws tsim ib gamete nqa cov chromosomes sib xyaw. Gametes muaj ib nrab ntawm cov chromosomes tsis tu ncua nyob rau hauv diploid somatic cell.
