Kev piav qhia: Kev hla ntawm homologous chromosomes tshwm sim hauv prophase I ntawm meiosis. Prophase I ntawm meiosis yog tus cwj pwm los ntawm cov kab ntawm homologous chromosomes nyob ze ua ke los tsim cov qauv hu ua tetrad.
Puas hla dhau qhov tshwm sim hauv prophase lossis anaphase?
Cov Lus Teb Ua Tau: Hla tshwm sim hauv anaphase ntawm txhua tus ncej ntawm lub xov tooj ntawm tes uas cov chromosomes tau ntim ua ke. Kev hla dhau tshwm sim hauv metaphase thaum tag nrho cov chromosomes ua raws li nyob rau hauv nruab nrab ntawm tes. Lawv qhov ze ze tso cai hla dhau los.
Puas hla dhau ntawm prophase 2?
Hla hla tsis tshwm sim thaum lub sijhawm prophase II; Nws tsuas yog tshwm sim thaum lub sij hawm prophase I. Hauv prophase II, tseem muaj ob daim ntawv luam ntawm txhua tus noob, tab sis lawv nyob ntawm tus muam chromatids hauv ib chromosome (tsis yog homologous chromosomes li hauv prophase I).
Nyob rau theem twg ntawm prophase kuv hla dhau tshwm sim?
Diplotene . Nyob rau theem plaub ntawm prophase I, diplotene (los ntawm Greek rau "ob npaug"), hla dhau ua tiav. Homologous chromosomes khaws tag nrho cov ntaub ntawv ntawm caj ces; Txawm li cas los xij, homologous chromosomes tam sim no yog cov niam txiv sib xyaw thiab niam txiv qhovntsej thiaj tsis mob.
Puas hla dhau qhov tshwm sim lig?
Kev hla ntawm DNA molecules ntawm homologues thiab cohesion ntawm tus muam chromatids ntawm ob sab ntawmcrossover ua ke underpin no lig prophase kev twb kev txuas, hu ua lub chiasma, uas pheej mus tom qab SC disassembly.
