Ntau npaum li cas cov khoom siv caj ces muaj nyob hauv ib lub cell thaum lub sij hawm prophase 1?
Ntau npaum li cas cov khoom siv caj ces muaj nyob hauv ib lub cell thaum lub sij hawm prophase 1?

Video: Ntau npaum li cas cov khoom siv caj ces muaj nyob hauv ib lub cell thaum lub sij hawm prophase 1?

Video: Ntau npaum li cas cov khoom siv caj ces muaj nyob hauv ib lub cell thaum lub sij hawm prophase 1?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Cov cov khoom siv caj ces ntawm cell yog duplicate thaum S theem ntawm interphase ib yam li nws tau nrog mitosis ua rau 46 chromosomes thiab 92 chromatids thaum Prophase Kuv thiab Metaphase I. Txawm li cas los xij, cov chromosomes no tsis tau teeb tsa tib yam li lawv tau ua thaum mob mitosis.

Xav txog qhov no, dab tsi tshwm sim hauv meiosis thaum lub sijhawm prophase 1?

Thaum prophase Kuv, lawv coil thiab ua luv luv thiab thicker thiab pom nyob rau hauv lub teeb microscope. Lub duplicated homologous chromosomes khub, thiab hla dhau (kev sib pauv lub cev ntawm chromosome seem) tshwm sim . Lub hnab ntawv nuclear ploj mus thaum kawg prophase Kuv, cia lub spindle nkag mus rau hauv lub nucleus.

Ib yam li ntawd, pes tsawg chromosomes nyob rau hauv g1 theem? 6 chromosomes

Tsis tas li lo lus nug yog, pes tsawg molecules ntawm DNA muaj nyob rau hauv g1 thiab g2 nyob rau hauv lub cell?

Txhua chromosome nyob rau hauv G2 muaj ob txoj hlua khi DNA molecules (chromatids) koom nrog ib lub centromere. Koj muaj sijhawm ntxiv los teb cov lus nug kom raug.

Dab tsi tshwm sim hauv prophase 1 ntawm meiosis uas tsis tshwm sim hauv prophase ntawm mitosis?

Muaj ob txoj haujlwm nuclear hauv meiosis , thiab tsuas yog ib qho hauv mob mitosis . Hla mus tshwm sim tsuas yog hauv meiosis ; nws tsis tshwm sim tag nrho hauv mob mitosis . Rov ua dua tshwm sim tsuas yog ib zaug hauv kev npaj rau ob leeg mob mitosis thiab meiosis.

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