Video: Yuav ua li cas yog anaphase II?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum anaphase II , thib peb theem ntawm meiosis II , tus muam chromatids ntawm txhua tus chromosome cais thiab txav mus rau cov ncej. Thaum lawv tsis txuas ntxiv lawm, cov qub chromatids hu ua unreplicated chromosomes.
Tsuas yog li ntawd, yuav ua li cas tshwm sim hauv anaphase?
Sister chromatids cais, thiab tam sim no tus ntxhais chromosomes txav mus rau cov ncej ntawm tes. Anaphase pib thaum cov centromeres duplicated ntawm txhua khub niam txiv chromatids sib cais, thiab tam sim no tus ntxhais chromosomes pib tsiv mus rau opposite ncej ntawm lub xovtooj ntawm tes vim qhov kev ua ntawm cov ntxaiv.
Ib sab saum toj no, anaphase 2 zoo li cas? Cov centromeres sib cais thiab tus muam chromatids-tam sim no tus neeg chromosomes-txav mus rau cov ncej ntawm lub cell. Cov centromeres sib cais, thiab ob lub chromatids ntawm txhua chromosome txav mus rau cov ncej ntawm lub ntxaiv. Cov chromatids cais yog tam sim no hu ua chromosomes nyob rau hauv lawv tus kheej txoj cai.
Ib yam li ntawd, nws raug nug, anaphase kuv txawv li cas ntawm anaphase II?
Hauv kev anaphase Kuv, splitting ntawm centromere tsis tshwm sim whereas, nyob rau hauv anaphase II , tus muam chromatids cais, cais lub centromere. Thaum kawg ntawm kev anaphase Kuv, ib homologous chromosome yuav mus rau txhua tus ntxhais cell whereas, thaum kawg ntawm anaphase II , ib tug muam chromatid yuav muaj nyob rau hauv txhua tus ntxhais cell.
Yuav ua li cas tshwm sim hauv telophase II?
Thaum telophase II , theem plaub ntawm meiosis II , cov chromosomes ncav cuag tus ncej, cytokinesis tshwm sim , ob lub hlwb tsim los ntawm meiosis kuv faib ua plaub lub hlwb haploid ntxhais, thiab lub hnab ntawv nuclear (dawb hauv daim duab ntawm txoj cai) daim ntawv. Meiosis ces ua tiav.
Pom zoo:
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Sister chromatids cais, thiab tam sim no tus ntxhais chromosomes txav mus rau cov ncej ntawm tes. Anaphase pib thaum cov centromeres duplicated ntawm txhua khub ntawm tus muam chromatids cais, thiab tam sim no-tus ntxhais chromosomes pib tsiv mus rau opposite ncej ntawm lub xovtooj ntawm tes vim qhov kev txiav txim ntawm spindle