Mitosis pib ntawm prophase nrog lub thickening thiab coiling ntawm chromosomes. Lub nucleolus, ib puag ncig qauv, shrinks thiab ploj. Qhov kawg ntawm prophase yog cim los ntawm pib ntawm lub koom haum ntawm ib pawg ntawm fibers los tsim ib tug ntxaiv thiab lub disintegration ntawm lub nuclear membrane
Qhov tshwm sim ntawm prophase yog dab tsi?
Thaum lub sijhawm prophase, qhov nyuaj ntawm DNA thiab cov proteins muaj nyob hauv cov nucleus, hu ua chromatin, condenses. Cov chromatin coils thiab dhau los ua compact, ua rau tsim ntawm pom chromosomes.
Yuav ua li cas 3 yam tshwm sim hauv prophase?
Cov xwm txheej tseem ceeb ntawm prophase yog: qhov condensation ntawm chromosomes, txav ntawm centrosomes, tsim cov mitotic spindle, thiab pib ntawm nucleoli tawg.
Qhov twg ntawm cov no tau tshwm sim los ntawm qhov kawg ntawm telophase?
Mitosis xaus nrog telophase, lossis theem uas cov chromosomes ncav cuag tus ncej. Cov ntaub so ntswg nuclear tom qab ntawd hloov kho, thiab cov chromosomes pib decondense rau hauv lawv cov kev sib tshuam. Telophase yog ua raws li cytokinesis, lossis faib cov cytoplasm rau hauv ob lub hlwb.
Koj tuaj yeem qhia tau li cas yog tias lub xov tooj ntawm tes nyob hauv telophase?
Thaum koj saib ntawm lub xov tooj ntawm tes hauv telophase hauv qab lub tshuab tsom, koj yuav pom DNA ntawm ob tus ncej. Tej zaum nws tseem nyob hauv nws lub xeev condensed los yog thinning tawm. Cov nucleoli tshiab tuaj yeem pom, thiab koj yuav pom lub cell membrane (los yog cell phab ntsa) ntawm ob lub cell.
