Qhov sib txawv tseem ceeb ntawm kev sib cais ntawm tes thiab kev faib tawm yog tias qhov cleavage yog hais txog kev faib tag nrho ntawm cytoplasm rau hauv ob qhov sib txawv thaum lub cell division yog hais txog kev tsim ob lossis ntau tus ntxhais cell los ntawm niam txiv cell.
Cells yuav tsum sib faib thiaj li tsim cov hlwb tshiab. Yog li ntawd, multicellular kab mob nyob rau hauv lub cell cycles. Lub voj voog ntawm tes yog cov txheej txheem tag nrho uas ua rau cov hlwb tshiab los ntawm cov niam txiv hlwb. Cell faib tshwm sim nyob rau hauv ob txoj kev uas yog, mitosis thiab meiosis. Mitosis yields tus ntxhais cell uas yog genetic zoo tib yam rau niam txiv cell. Ib lub voj voog mitotic tsim ob lub hlwb. Hauv qhov sib piv, meiosis tsim cov menyuam ntxhais uas muaj ib nrab ntawm cov chromosome tus lej ntawm niam txiv cell. Ib lub voj voog meiotic ua rau plaub tus ntxhais. Cell faib tshwm sim ntawm ntau theem xws li interphase, prophase, metaphase, anaphase, telophase, thiab thaum kawg cytokinesis. Cleavage yog lwm lub npe rau cytokinesis.
Cleavage yog dab tsi?
Cleavage, tseem hu ua cytokinesis, yog cov txheej txheem ntawm kev faib cytoplasm ua raws li kev faib tawm ntawm cov cell division. Tshwj xeeb, cytoplasm ntawm niam txiv cell faib ua cytoplasms 'ntawm ob tus ntxhais cell. Qhov no yog qhov tshwm sim tiag tiag uas ua rau cov hlwb tshiab los ntawm niam txiv lub hlwb. Yog li ntawd, cleavage yog tshwm sim rau ob qho tib si cell divisions xws li mitosis thiab meiosis. Nws tshwm sim thaum kawg ntawm telophase ntawm mitosis thiab thaum kawg ntawm telophase II ntawm meiosis. Txawm li cas los xij, nws pib nrog anaphase thiab mus dhau telophase thiab xaus nrog tsim ob lub hlwb.
Daim duab 01: Cleavage lossis Cytokinesis
Nyob hauv cov tsiaj hlwb, cytokinesis tshwm sim los ntawm qhov cleavage furrow. Nyob ib ncig ntawm lub cell equator, ib lub nplhaib protein filament hu ua contractile nplhaib cov ntaub ntawv. Tom qab ntawd lub nplhaib contractile shrinks los ntawm pinching lub plasma membrane inwards los tsim cov cleavage furrow. Thaum lub nplhaib contractile txuas ntxiv zuj zus, nws thiaj li tshwm sim, ob tug ntxhais hlwb kom tag nrog lawv cov plasma daim nyias nyias. Nyob rau hauv cov nroj tsuag, cytokinesis tshwm sim los ntawm kev tsim ntawm lub cell phaj es tsis txhob ntawm lub cleavage furrow. Qhov no yog vim hais tias cov nroj tsuag muaj lub cell phab ntsa sab nraud rau plasma membrane.
Cell Division yog dab tsi?
Cell division yog cov txheej txheem uas ua rau cov hlwb tshiab los ntawm niam txiv lub hlwb. Muaj ob hom kev faib cell uas yog mitosis thiab meiosis. Mitosis yog ib hom kev faib cov noob qoob loo uas tsim cov noob qes zoo tib yam. Tab sis, meiosis yog ib hom kev faib ua me me uas tsim gametes uas muaj ib nrab ntawm cov chromosomes hauv niam txiv lub hlwb. Txawm li cas los xij, ob qho kev faib tawm ntawm tes no yog cov txheej txheem tseem ceeb hauv ntau cov kab mob.
Cell faib ntawm prokaryotes yooj yim. Ua piv txwv, cov kab mob kab mob sib faib los ntawm cov txheej txheem hu ua binary fission. Nws tsis yog nyuaj vim qhov kev faib cell tshwm sim hauv eukaryotes. Thaum xav txog ob lub xov tooj sib cais sib cais, mitosis tsuas muaj ib qho kev faib tawm nuclear xwb thaum meiosis muaj ob qhov kev faib ua tiav nuclear. Li no, meiosis muaj ob lub voj voog; meiosis I thiab meiosis II. Txhua lub voj voog muaj sub-phase xws li prophase, metaphase, anaphase thiab telophase. Hauv ob lub cell division, qhov kawg tshwm sim uas tshwm sim yog cytokinesis lossis cytoplasm division.
Daim duab 02: Cell Division
Raws li cov ntsiab lus, mitotic cell division ua rau ob tug ntxhais cell uas muaj caj ces zoo tib yam rau niam txiv cell thaum meiotic cell faib ua rau plaub tus ntxhais hlwb sib txawv thiab muaj ib nrab ntawm cov chromosome tooj ntawm niam txiv cell.
Dab tsi yog qhov sib txawv ntawm Cleavage thiab Cell Division?
- Cleavage and Cell Division yog ob txheej xwm ntawm tes.
- Ob txheej txheem yog ib feem ntawm kev faib cell.
- Nyob rau hauv ob qhov xwm txheej, ib qho tshwj xeeb faib ua ob lossis ntau qhov chaw.
Qhov txawv ntawm Cleavage thiab Cell Division yog dab tsi?
Cleavage thiab cell faib yog ob txoj haujlwm tseem ceeb. Nyob rau hauv qhov tseeb txhais tau tias, cleavage yog ib feem ntawm lub cell division. Qhov sib txawv ntawm cleavage thiab cell division yog qhov cleavage yog hais txog kev faib cov niam txiv cytoplasm rau hauv cov ntxhais cell thaum lub cell division hais txog tag nrho cov txheej txheem ntawm tsim cov hlwb tshiab los ntawm niam txiv hlwb. Yog li ntawd, cov xwm txheej tseem ceeb hauv cleavage yog qhov tsim ntawm cleavage furrow nyob rau hauv cov tsiaj hlwb thiab tsim ib tug cell phaj nyob rau hauv cov nroj tsuag hlwb. Ntawm qhov tsis sib xws, cov xwm txheej tseem ceeb hauv kev faib cell yog interphase, prophase, metaphase, anaphase, telophase thiab cytokinesis.
Infographic ntawm qhov sib txawv ntawm kev sib cais thiab kev faib cell qhia hauv qab no muab cov ntsiab lus ntxiv.
Summary – Cleavage vs Cell Division
Cell division ua rau cov ntxhais tshiab los ntawm niam txiv hlwb. Nws yog ib qho tseem ceeb txheej txheem tshwm sim nyob rau hauv multicellular kab mob nyob rau hauv thiaj li yuav nce cell xov tooj rau kev loj hlob thiab kev loj hlob thiab tsim gametes rau kev sib deev kev sib deev. Cleavage yog ib feem ntawm kev faib cell. Nws yog qhov xwm txheej uas faib cov niam txiv cytoplasm rau hauv cytoplasms ntawm cov menyuam ntxhais. Tshwj tsis yog cytokinesis lossis cleavage tshwm sim, niam txiv lub hlwb tsis hloov mus rau hauv cov menyuam ntxhais. Yog li, cytokinesis yog qhov tshwm sim tiag tiag uas faib cov niam txiv lub hlwb rau hauv cov menyuam ntxhais tom qab kev faib tawm nuclear. Qhov no yog qhov sib txawv ntawm cleavage thiab cell division.
