Tsawg kawg ib txhia, nws yog suav tias yog av-evolved, multicellularity tshwm sim los ntawm cov hlwb sib cais thiab rov qab ua dua(piv txwv li, cellular slime pwm) whereas rau feem ntau ntawm ntau hom cellular (cov uas evolved nyob rau hauv dej ib puag ncig), multicellularity tshwm sim raws li ib tug tshwm sim ntawm cov hlwb tsis cais raws li nram no …
Thaum twg cov kab mob sib kis tau tshwm sim?
Cov ntaub ntawv loj, ntau lub cev muaj sia tuaj yeem tshwm sim hauv ntiaj teb ib txhiab xyoo ua ntej tshaj li qhov tau xav yav dhau los. Macroscopic multicellular lub neej tau sau hnub tim rau thaj tsam 600 lab xyoo dhau los, tab sis cov pob txha tshiab qhia tias cov kab mob centimeters-ntev ntau cov kab mob muaj nyob rau thaum ntxov li 1.56 billion xyoo dhau los.
Cov kab mob ua li cas txhim kho ntau lub cell?
Plaub txheej txheem tseem ceeb los ntawm cov kab mob ntau lub cev tau tsim: cell proliferation, cell specialization, cell interaction, and cell move. Nyob rau hauv ib qho kev loj hlob embryo, tag nrho cov txheej txheem no tshwm sim ib zaug, nyob rau hauv ib tug kaleidoscopic ntau yam nyob rau hauv ntau qhov chaw ntawm lub cev.
Yuav ua li cas muaj ntau lub cellular tshwm sim hauv fungus?
Ntau tsev neeg cov noob koom nrog cell adhesion, tiv thaiv, fruiting lub cev pib thiab morphogenesistau khaws cia thoob plaws cov kab mob, qhia tias cov caj ces ua ntej rau kev ua haujlwm ntawm ntau lub cell muaj dav hauv uni- thiab yooj yim multicellular fungi.
Dab tsi ua rau muaj ntau lub neej ua rauform?
Lub ntiaj teb sov sov, nrog rau cov hiav txwv npog thaj av, tsim cov xwm txheej tsim nyog rau ntau cov kab mob hauv lub cev.
