Dab tsi yog qhov txawv ntawm mitosis thiab meiosis thaum lub sij hawm prophase?
Dab tsi yog qhov txawv ntawm mitosis thiab meiosis thaum lub sij hawm prophase?

Video: Dab tsi yog qhov txawv ntawm mitosis thiab meiosis thaum lub sij hawm prophase?

Video: Dab tsi yog qhov txawv ntawm mitosis thiab meiosis thaum lub sij hawm prophase?
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Anonim

Mitosis : Thaum thawj mitotic stage, hu ua prophase , chromatin condenses rau hauv discrete chromosomes, lub hnab ntawv nuclear tawg, thiab spindle fibers tsim ntawm cov ncej ntawm tes. Ib lub xovtooj siv sijhawm tsawg dua hauv prophase ntawm mob mitosis tshaj ib lub cell hauv prophase Kuv ntawm meiosis.

Yog li ntawd, puas yog prophase tib yam hauv mitosis thiab meiosis?

Prophase yog thawj theem ntawm kev faib cell hauv eukaryotes. Prophase , ob ob mitosis thiab meiosis , yog lees paub los ntawm condensing ntawm chromosomes thiab kev sib cais ntawm cov centrioles nyob rau hauv lub centrosome. Cov organelle no tswj cov microtubules hauv lub cell, thiab txhua lub centriole yog ib nrab ntawm cov organelle.

Kuj Paub, leej twg ntawm cov hauv qab no txawv qhov prophase 1 ntawm meiosis los ntawm prophase ntawm mitosis? Meiosis = homologous chromosomes txhua tus muaj 2 tus muam chromosomes tuaj ua ke ua khub. Cov qauv tsim, muaj plaub chromatids, hu ua tetrad.

Ib yam li ntawd, tib neeg nug, qhov txawv ntawm mitosis thiab meiosis yog dab tsi?

Mitosis tsim 2 tus ntxhais cell uas yog genetic zoo tib yam rau niam txiv cell. Qhov no yog qhov tshwm sim ntawm DNA replication thiab 1 cell division. Mitosis yog siv nyob rau hauv kev loj hlob thiab asexual reproduction. Meiosis tsim 4 tus ntxhais cell, txhua tus tsis zoo ib yam rau niam txiv cell thiab ib leeg.

Dab tsi yog qhov txawv ntawm metaphase hauv mitosis thiab meiosis?

Tsib Ntsiab Qhov txawv Hauv metaphase Kuv ntawm meiosis , tetrads dlhos rau ntawm metaphase phaj. Hauv metaphase ntawm mob mitosis , tus kheej chromosomes aligned muaj. Hauv meiosis muaj ob txoj kev faib ua tiav, thaum kawg tsim tau plaub tus ntxhais. Hauv mob mitosis , tsuas muaj ib qho kev faib thiab nws tsim tau ob tug ntxhais hlwb.

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