Vim li cas gametes yuav tsum tau txais meiosis tsis yog mitosis?
Vim li cas gametes yuav tsum tau txais meiosis tsis yog mitosis?

Video: Vim li cas gametes yuav tsum tau txais meiosis tsis yog mitosis?

Video: Vim li cas gametes yuav tsum tau txais meiosis tsis yog mitosis?
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Vim tias tag nrho cov ntsiab lus ntawm meiosis yog los tsim cov hlwb haploid uas tuaj yeem mus txuas nrog cov hlwb haploid los ntawm lwm tus neeg, los tsim ib tus neeg tshiab. yog genetic cim thiab txawv ntawm los yog ntawm nws niam nws txiv. Yog cov kab mob ntawd tsim gametes tsuas yog underwent mitosis, ces lawv yuav ' t ua gametes.

Kuj paub, vim li cas meiosis tsuas tshwm sim hauv gametes?

Meiosis . Hauv biology, meiosis yog tus txheej txheem uas ib tug diploid eukaryotic cell faib los tsim plaub haploid hlwb feem ntau hu ua gametes . Vim hais tias cov chromosomes ntawm txhua tus niam txiv tau txais kev tshuaj ntsuam genetic recombination thaum lub sij hawm meiosis , cwb gamete , thiab yog li txhua tus zygote, yuav muaj cov cim caj ces tshwj xeeb hauv nws cov DNA.

Qhov thib ob, vim li cas ob txoj kev faib yuav tsum muaj nyob rau hauv meiosis? Los ntawm Amy: Q1 = Cells nyob rau hauv mob mitosis xwb faib ib zaug vim lawv tsim ob tshiab genetic zoo tib yam hlwb qho as in meiosis hlwb xav tau ob sets ntawm kev faib vim lawv yuav tsum ua tus cell ib haploid cell uas tsuas muaj ib nrab ntawm tag nrho cov naj npawb ntawm chromosomes.

Tib neeg kuj nug, yuav ua li cas yog gametes raug tsim los ntawm mitosis es tsis txhob meiosis?

Meiosis xyuas kom meej tias cov ua cov ntxhais hlwb yog haploid nyob rau hauv cov xwm. Thaum lub sij hawm fertilization, lub haploid gametes fuse los tsim ib lub zygote uas yog diploid. Yog tus gametes tau tsim los ntawm mitosis , lawv yuav yuav diploid hauv xwm. Qhov tshwm sim zygote yuav yog li ntawd muaj plaub pawg ntawm chromosomes xwb ntawm ob.

Yuav ua li cas gametes tsim nyob rau hauv meiosis?

Tsim ntawm Gametes Thaum meiosis , DNA tsuas yog replicated los yog theej ib zaug. Yog li, thaum meiosis , DNA lossis chromosomes raug theej, tom qab ntawd muab faib ua ob lub hlwb (nrog rau tag nrho cov chromosomes txhua), ces rov faib ua ob lub hlwb ntxiv, tsuas yog ib nrab ntawm cov khub chromosomes hauv txhua lub xovtooj tshiab.

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