Nyob rau hauv prophase I, replicated homologs khub thiab ua lub cev txuas nrog lawv qhov ntev los ntawm zipper zoo li cov qauv protein hu ua synaptonemal complex qhov no yog hu ua synapsis genetic rearrangement ntawm non-viv ncaus chromatids, hla dhau, ces tshwm sim.
Yuav ua li cas rau homologous chromosomes thaum lub sij hawm prophase 1?
Thaum lub sijhawm prophase I, homologous chromosomes condense thiab pom raws li tus x zoo li peb paub, ua khub los ua ib qho tetrad, thiab pauv cov khoom siv caj ces los ntawm kev hlaLub sijhawm prometaphase I, microtubules txuas ntawm chromosomes 'kinetochores thiab lub hnab ntawv nuclear tawg.
Puas muaj homologous chromosomes hauv prophase 1?
Lub sijhawm prophase I, homologous chromosomes khub thiab tsim synapses, ib kauj ruam tshwj xeeb rau meiosis. Cov chromosomes ua ke yog hu ua bivalents, thiab tsim ntawm chiasmata tshwm sim los ntawm kev sib txuas ntawm caj ces yuav tshwm sim. Chromosomal condensation tso cai rau cov no los saib hauv lub tshuab tsom.
Nws hu li cas thaum homologous chromosomes pauv cov khoom thaum lub sijhawm prophase 1?
Kev piav qhia: Thaum lub sijhawm prophase I, homologous chromosomes ua ke nrog ib leeg thiab pauv cov khoom siv caj ces hauv cov txheej txheem hu ua chromosomal crossover. Kev sib pauv tshwm sim hauv ntu dhau ib cheeb tsam me me ntawm homology (zoo sib xws hauv kab ke, piv txwv li., tib alleles).
Yuav ua li cas rau chromosomes thaum prophase kuv?
Nyob rau hauv prophase I, lub homologous chromosomes condense thiab ua pom raws li tus x zoo peb paub, ua khub los ua ib tug tetrad, thiab pauv genetic khoom los ntawm kev hla dhau. Thaum lub sij hawm prometaphase I, microtubules txuas ntawm chromosomes 'kinetochores thiab lub hnab ntawv nuclear tawg.
