Dab tsi theem ntawm mitosis puas lub nuclear membrane hloov kho?
Dab tsi theem ntawm mitosis puas lub nuclear membrane hloov kho?

Video: Dab tsi theem ntawm mitosis puas lub nuclear membrane hloov kho?

Video: Dab tsi theem ntawm mitosis puas lub nuclear membrane hloov kho?
Video: Leng Yang - Yog Vim Dab Tsi (Official Full Song | Nkauj Tawm Tshiab) 2020/05/24 2024, Kaum ib hlis
Anonim

Telophase . Qhov kawg theem ntawm mitosis, thiab kev thim rov qab ntawm ntau cov txheej txheem tau pom thaum lub sijhawm prophase . Lub nuclear membrane hloov kho nyob ib ncig ntawm lub chromosomes grouped ntawm ob tug ncej ntawm lub cell, lub chromosomes uncoil thiab ua diffuse, thiab spindle fibers ploj.

Yog li ntawd, thaum lub sij hawm lub sij hawm twg ntawm mitosis puas lub nuclear membrane yaj tag?

prophase

Ib sab saum toj no, yuav ua li cas thiaj li nuclear membrane ploj thaum mitosis? Cov lub hnab ntawv nuclear ua tsis yog ploj lawm hauv metaphase ntawm mob mitosis , vim nws twb ua nyob rau hauv prophase. Cov lub hnab ntawv nuclear yuav tsum tau muab sib cais kom cov chromosomes tuaj yeem pom, nyob rau hauv nruab nrab ntawm lub cell, thiab ces rub tawm.

Ib yam li ntawd, nyob rau theem twg ntawm mitosis puas lub hnab ntawv nuclear hloov kho lub hlwb?

Thaum telophase , kev hloov kho lub hnab ntawv nuclear.

Puas yog DNA condensed hauv S theem?

S Phase ( Synthesis ntawm DNA) Thoob plaws hauv interphase, nuclear DNA tseem nyob rau hauv ib tug semi-condensed chromatin configuration. Nyob rau hauv S theem, DNA replication tshwm sim nyob rau hauv tsim ntawm zoo tib yam khub ntawm DNA molecules, tus muam chromatids, uas yog ruaj khov txuas mus rau lub centromeric cheeb tsam.

Pom zoo: