Cov txheej txheem:

Puas yog cov txheej txheem hauv prophase 1 uas tsim tetrads?
Puas yog cov txheej txheem hauv prophase 1 uas tsim tetrads?
Anonim

Nyob rau hauv prophase I ntawm meiosis, cov homologous chromosomes homologous chromosomes Homologous chromosomes yog matched khub uas muaj tib cov noob nyob rau hauv zoo tib yam qhov chaw raws lawv ntevDiploid kab mob tau txais ib daim qauv ntawm txhua homologous chromosome los ntawm txhua tus niam txiv; tag nrho ua ke, lawv suav hais tias yog tag nrho cov chromosomes. https://courses.lumenlearning.com › the-process-of-meiosis

Txheej Txheem Meiosis | Biology I - Lumen Kawm - Phau Ntawv Yooj Yim …

tsim cov tetrads. Hauv metaphase I, cov khub no nyob rau ntawm qhov chaw nruab nrab ntawm ob tus ncej ntawm tes los tsim cov phaj metaphase.

Dab tsi yog txheej txheem hauv prophase kuv uas tsim tetrads?

Nruab nrab ntawm prophase I thiab metaphase I, cov khub ntawm homologous chromosome daim ntawv tetrads. Nyob rau hauv lub tetrad, ib khub ntawm chromatid caj npab tuaj yeem sib tshooj thiab fuse hauv cov txheej txheem hu ua hla dhau lossis rov ua duaRecombination yog txheej txheem uas tawg, rov ua dua thiab rov ua ntu ntawm DNA los tsim cov kev sib txuas tshiab ntawm noob.

txheej txheem ntawm kev tsim tetrad hu ua dab tsi?

Thawj theem ntawm meiosis yog hu ua prophase I, thiab qhov no yog thaum cov ntaub ntawv tetrad. Ob homologous chromosomes yuav nyob ib sab ntawm ib leeg.

Lub sijhawm twg ntawm meiosis ua tetrad daim ntawv?

Thaum lub sijhawm prophase I, cov khub ntawm homologous chromosomes tuaj ua ke los ua ib qho tetrad lossis bivalent, uas muaj plaub chromatids. Recombination tuaj yeem tshwm sim ntawm ob chromatids nyob rau hauv cov qauv tetrad no.

Puas tetrads tsim nyob rau hauv prophase 2?

Tom qab hla dhau, cov tetrads (recombinant chromosome khub) tuaj yeem sib cais. Tetrads muaj 23 chromosome khub uas muaj 92 chromatids. … Nyob rau hauv prophase II, tsis hla dhau tshwm sim vim qhov no yuav tsum tshwm sim ntawm homologous chromosome khub.

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