hujayralarning mitotik bo’linishi va hayotiy sikli

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mavzu № 6. hujayralarning mitotik bo’linishi va hayotiy sikli. hujayra proliferatsiyasi. 1-topshiriq. savollarga javob yozing. 1.hujayra sikli va mitoz sikli tushunchalarini izohlab bering. _______________________________________________________________________________________________________________________________________________________________________________________________________________ 2.interfaza davrlarida kechadigan jarayonlarni tushuntiring. _______________________________________________________________________________________________________________________________________________________________________________________________________________ 3.mitozga kirishayotgan hujayrada xromosomalar va dnk miqdori qancha bo'ladi? ______________________________________________________________________ ______________________________________________________________________ 4.mitozda kariokinez va sitokinez, sitototomiya jarayonlarini tushuntiring. _______________________________________________________________________________________________________________________________________________________________________________________________________________ 5.anafazada xromosomalarning qutblarga siljishi mexanizmlarini tushuntirib bering. _______________________________________________________________________________________________________________________________________________________________________________________________________________ 6.mitozning ahamiyatini aytib bering. ______________________________________________________________________________________________________________________________________________________________________________________________________________ 2-topshiriq. rasmda ko'rsatilgan mitozning har bir bosqichida xromosoma to'plami va dnk miqdorini aniqlang. № mitoz fazalari xromosoma to’plami va dnk miqdori 1. 2. 3. 4. 5. 3-topshiriq. rasmda mitozning qaysi fazasi ko’rsatilgan? raqamlangan qismlarini jadvalga yozing. № mitoz fazasi 1. 2. 3

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. 4. 4-topshiriq. vaziyatga doir masalalar. 1. mitoz jarayoni kechayotganda organizmga muhitning zararli omillari ta’sir qilib, mitoz duki ipchalarining parchalanishiga sabab bo'ldi. bu holat qanday natijalarga olib kelishi mumkin? _______________________________________________________________________________________________________________________________________________________________________________________________________________ 2. mikropreparatlarda mitoz o'rganilayotganda ba’zi preparatlarda mitoz duki tarkibida sentriolalar borligi, boshqa preparatlarda esa sentriolalar yo'qligi aniqlandi. buningsababinimada deb o‘ylaysiz? __________________________________________________________________________________________________________________________________________

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mavzu № 6. hujayralarning mitotik bo’linishi va hayotiy sikli. hujayra proliferatsiyasi. 1-topshiriq. savollarga javob yozing. 1.hujayra sikli va mitoz sikli tushunchalarini izohlab bering. _______________________________________________________________________________________________________________________________________________________________________________________________________________ 2.interfaza davrlarida kechadigan jarayonlarni tushuntiring. _______________________________________________________________________________________________________________________________________________________________________________________________________________ 3.mitozga kirishayotgan hujayrada xromosomalar va dnk miqdori qancha bo'ladi? _______________________________________________________...

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