Video: Yuav muaj pes tsawg tus tib neeg lub cell tom qab 24 teev?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Yog hais tias kab lis kev cai hauv chav kuaj pib nrog ib tug tib neeg cell , yuav muaj pes tsawg lub cell tom qab 24 teev? Ob lub hlwb.
Tsuas yog li ntawd, lub voj voog ntawm tes siv sijhawm ntev npaum li cas hauv tib neeg?
Cov ntawm tes loj hlob (ntau dua) Lub sijhawm ntawm cov no cell voj voog theem sib txawv considerably nyob rau hauv ntau hom hlwb . Rau qhov raug nthuav tawm sai sai tib neeg cell nrog rau tag nrho voj voog 24 teev, G1 theem yuav kav ntev txog 11 teev, S theem txog 8 teev, G.2 txog 4 teev, thiab M txog 1 teev.
Tsis tas li ntawd, yuav ua li cas rau lub sijhawm tsim nyog rau lub voj voog ntawm tes? Thaum muaj mob qog noj ntshav ntawm tes , dab tsi tshwm sim rau lub sijhawm uas tsim nyog rau lub voj voog ntawm tes ? Cov ntawm tes tab tom npaj faib, yog li muaj ob npaug (nws faib ua ob hlwb ) tus nqi ntawm DNA thaum kawg ntawm synthesis, tshaj thaum pib. Lwm yam tshaj li cytokinesis, dab tsi ntxiv tshwm sim thaum lub sij hawm mitosis?
Hais txog qhov no, pes tsawg lub cell nce?
Hauv cov hlwb nrog lub nucleus, zoo li hauv eukaryotes, lub voj voog ntawm tes kuj tau muab faib ua ob theem tseem ceeb: interphase thiab mitotic (M) theem (xws li. mob mitosis thiab cytokinesis). Thaum sib cuam tshuam, lub xov tooj ntawm tes loj hlob, sib sau cov as -ham uas xav tau rau mob mitosis , thiab undergoes DNA replication npaj nws rau cell division.
Dab tsi yog qhov kev txiav txim ntawm cov theem ntawm lub hlwb?
Hauv eukaryotes, lub ntawm tes Lub voj voog muaj lub sijhawm npaj ntev, hu ua interphase. Interphase tau muab faib ua G.1, S, thiab G2 theem . The mitotic theem pib nrog karyokinesis (mitosis), uas muaj tsib theem : prophase, prometaphase, metaphase, anaphase, thiab telophase.
Pom zoo:
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