spireme (spī'rem, spī'rēm), Lub sijhawm dhau los siv rau thawj theem ntawm mitosis lossis meiosis (prophase)thaum lub sijhawm txuas chromosome filaments muaj qhov tshwm sim ntawm Ib lub pob xoob ntawm cov xov paj, ntawm qhov tsis raug tias cov filaments tau txuas ntxiv thiab tom qab ntawd tawg sib nrug los ua ib tus neeg chromosomes.
Lub ntsiab lus ntawm Spireme yog dab tsi?
Kev Kho Mob Txhais ntawm spireme
: ib txoj xov txuas ntxiv tau pom nyob rau hauv kev npaj ruaj khov ntawm prophase ntawm mitosis uas zoo nkaus li yog ib txoj hlua ntawm chromatin tab sis feem ntau tuav rau ua ib qho khoom cuav.
Qhov twg ntawm cov theem ntawm mitosis tseem hu ua Spireme stage?
Kev faib cell muaj ob theem loj uas yog Interphase thiab Mitotic theem (thaum muaj mitosis) thiab Meiotic theem (hauv meiosis). Chromatin tseem tsis sib haumhauv interphase thiab pom zoo li lub pob ntawm cov ntaub plaub kuj hu ua spiremea spireme theem.
metaphase yog dab tsi?
Metaphase yog theem thib peb ntawm mitosis, txheej txheem uas cais cov khoom siv caj ces duplicated nqa nyob rau hauv lub nucleus ntawm niam txiv cell rau hauv ob lub hlwb zoo tib yam. … Muaj ib qho chaw kuaj xyuas tseem ceeb hauv nruab nrab ntawm mitosis, hu ua metaphase checkpoint, thaum lub sij hawm lub cell xyuas kom meej tias nws npaj txhij los faib.
bouquet stage yog dab tsi?
Thaum the leptotene theem ntawm meiosis, cov telomeres ntawm tag nrho cov chromosomes converge mus rau hauv daim nyias nyias thiab xav tias cov duab ntawm ib lub paj. Li no, leptotene hu ua Bouquet stage.
