Lub homologous chromosomes nyob rau hauv lub cell yuav tsis ua khubthiab tau txais kev tshuaj ntsuam genetic recombination nrog ib leeg.
Vim li cas homologous chromosomes khub?
Lub homologous chromosomes nyob rau hauv lub nucleus ntawm lub cev gamete khub thaum lub sij hawm meiosis. Qhov kev tshwm sim no yog tseem ceeb los txhawb kev hloov caj ces. Lub homologous khub pauv cov noob los ntawm kev sib txuas ntawm cov noob caj noob ces kom kev sib txawv ntawm caj ces yuav raug txhawb.
Yuav ua li cas yog tias homologous chromosomes tsis ua khub?
Aneuploidy yog tshwm sim los ntawm nondisjunction, uas tshwm sim thaum khub ntawm homologous chromosomes los yog tus muam chromatids tsis cais thaum lub sij hawm meiosis. Kev poob ntawm ib qho chromosome los ntawm diploid genome hu ua monosomy (2n-1), thaum qhov nce ntawm ib chromosome hu ua trisomy (2n + 1).
Pob homologous chromosomes khub thaum lub sij hawm meiosis?
Yes, homologous chromosomes (replicated hauv S theem) ua ke thaum synapsis los ua tetrads. … Meiosis kuv yog hu ua qhov kev faib txo vim qhov no yog thaum cov txheej txheem ntawm homologous chromosomes tau sib cais (diploid lossis 2n raug txo kom haploid lossis 1n).
Yuav ua li cas thaum homologous chromosomes match?
Somatic hlwb qee zaum hu ua "lub cev" hlwb. Homologous chromosomes tau sib phim pairs uas muaj tib cov noob nyob rau hauv tib qhov chaw raws lawv qhov ntev. Cov kab mob Diploid tau txais ib daim qauv ntawm txhua tushomologous chromosome los ntawm txhua tus niam txiv; tag nrho ua ke, lawv suav hais tias yog tag nrho cov chromosomes.
