Qhov sib txawv tseem ceeb ntawm lub cev hlwb thiab cov qe menyuam yaus yog cov hlwb hauv lub cev yog cov hlwb diploid somatic uas ua rau cov ntaub so ntswg thiab cov kab mob hauv lub cev thaum lub cev xeeb tub yog cov hlwb haploid, feem ntau gametes (phev thiab qe), uas koom nrog kev sib deev.
Cells yog lub hauv paus txheej txheem ntawm cov kab mob nyob. Qee cov kab mob yog unicellular, muaj tsuas yog ib lub cell. Feem ntau cov kab mob muaj ntau lub cell, muaj ob peb mus rau billions ntawm cov hlwb. Ntxiv mus, muaj ntau hom cell nyob rau hauv ib tug multicellular kab mob. Cov hlwb hauv lub cev thiab cov qe menyuam yaus yog ob pawg loj ntawm cov hlwb. Lub cev hlwb yog cov hlwb diploid uas tsim cov ntaub so ntswg thiab cov kabmob ntawm cov kabmob. Hauv qhov sib piv, thawj cov qe menyuam yaus yog cov hlwb haploid koom nrog kev sib deev.
Lub cev Cell yog dab tsi?
Lub cev hlwb, tseem hu ua somatic hlwb, yog cov hlwb tsis tu ncua uas tsim cov ntaub so ntswg thiab cov kabmob ntawm cov kabmob. Cov hlwb no tsis cuam tshuam nrog kev tsim tawm ntawm lub cev. Yog li ntawd, lawv tsis yog germline hlwb. Lub cev hlwb ua rau ntawm daim tawv nqaij, plaub hau, nqaij, thiab lwm yam. Hauv lwm lo lus, tag nrho peb cov khoom nruab nrog cev xws li tawv nqaij, pob txha, siab, hlwb, ntshav thiab cov ntaub somatic, thiab lwm yam, yog tsim los ntawm cov hlwb somatic. Lub cev hlwb muaj ob pawg chromosomes tau txais los ntawm leej niam thiab leej txiv. Li no, lawv yog diploid hauv xwm.
Daim duab 01: Lub Cev Lub Cev - Pob Txha
Ntxiv mus, cov hlwb somatic tuaj yeem sib txawv rau ntau hom cell thiab ua haujlwm sib txawv hauv peb lub cev. Thaum lawv sib txawv rau hauv ib hom cell, lawv poob peev xwm los faib. Somatic cell tsim tshwm sim los ntawm mitosis. Tib neeg lub cev muaj txog 220 hom somatic hlwb. Kev hloov pauv tshwm sim hauv cov hlwb somatic tuaj yeem cuam tshuam rau tus neeg, tab sis lawv tsis kis mus rau cov xeeb ntxwv.
Primary Reproductive Cells yog dab tsi?
Cov qe menyuam yaus yog cov hlwb haploid uas tsim tawm thaum muaj kev sib deev. Yeej, lawv yog txiv neej thiab poj niam gametes: phev thiab qe, feem. Piv nrog rau cov hlwb hauv lub cev, tsuas muaj tsawg tsawg ntawm cov hlwb sib deev muaj nyob rau hauv ib lub cev. Lawv raug tsim nyob rau hauv cov ntaub so ntswg tshwj xeeb ntawm cov txiv neej testes thiab poj niam zes qe menyuam. Lawv tsim tshwm sim los ntawm diploid cell los ntawm meiosis. Yog li ntawd, cov hlwb no tsuas muaj ib pawg chromosomes thiab yog cov hlwb haploid.
Daim duab 02: Cov Cuam Tshuam Loj Loj
Thaum kev sib deev, cov txiv neej deev cell fuses nrog poj niam deev cell thiab tsim ib lub cell diploid hu ua zygote. Lub zygote muab faib los ntawm mitosis thiab tsim ib lub cev. Ib yam li ntawd, tus naj npawb ntawm chromosomes nyob rau hauv ib lub cev yog khaws cia ntau tiam neeg.
Dab tsi yog qhov zoo sib xws ntawm lub cev Cells thiab cov qe menyuam yaus thaum ntxov?
- lub cev hlwb thiab cov qe menyuam yaus yog cov hlwb nyob.
- Lawv faib los ntawm cell division.
- Lawv yog cov hlwb eukaryotic uas muaj cov nucleus thiab cov kab mob sib txuas ua ke.
Dab tsi yog qhov txawv ntawm lub cev Cells thiab lub cev xeeb tub thawj zaug?
Lub cev hlwb yog cov hlwb uas tsim cov ntaub so ntswg thiab cov kabmob ntawm cov kabmob. Hauv qhov sib piv, thawj cov qe menyuam yaus yog cov hlwb sib deev lossis gametes uas koom nrog kev sib deev. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cov hlwb hauv lub cev thiab cov hlwb tseem ceeb. Tsis tas li ntawd, lub cev hlwb yog diploid nyob rau hauv cov xwm txheej thaum lub cev xeeb tub yog haploid nyob rau hauv cov xwm. Yog li ntawd, qhov no kuj yog qhov sib txawv loj ntawm lub cev cov hlwb thiab cov qe menyuam yaus. Tsis tas li ntawd, lub cev cell tsim tshwm sim los ntawm mitosis, thaum lub sij hawm ua me nyuam hauv plab pib tshwm sim ntawm meiosis.
Cov hauv qab no qhia txog qhov sib txawv ntawm lub cev hlwb thiab cov qe menyuam loj hlob.
Summary – Lub cev Cells vs Primary Reproductive Cells
lub cev hlwb tsis yog cov kab mob germline. Lawv tsim lub cev ntawm lub cev. Yog li ntawd, cov leeg nqaij, cov pob txha, cov qe ntshav, cov paj hlwb yog ib co piv txwv ntawm lub cev hlwb. Ntxiv mus, lub cev hlwb yog diploid vim lawv muaj ob pawg chromosomes. Hauv qhov sib piv, thawj cov qe menyuam yaus yog cov hlwb sib deev uas koom nrog kev sib deev. Lawv yog txiv neej thiab poj niam gametes: phev thiab qe. Ntxiv mus, lawv yog haploid nyob rau hauv qhov. Kev hloov pauv ntawm cov hlwb somatic cuam tshuam rau tus neeg, tab sis lawv tsis dhau mus rau tiam tom ntej thaum kev hloov pauv hauv cov hlwb sib deev tau dhau mus rau cov xeeb ntxwv thiab cuam tshuam rau lawv. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm lub cev hlwb thiab cov qe menyuam yaus.
