Cov chaw kuaj kab mob tshwm sim thaum lub sijhawm M. Cov txheej txheem qhia txog kev hloov pauv ntawm tes ntawm prometaphase thiab anaphase.
Lub sijhawm twg ntawm mitosis yog qhov chaw kuaj kab mob?
Daim duab ntawm lub voj voog ntawm tes nrog cov ntawv txheeb xyuas. G1 checkpoint nyob ze ntawm qhov kawg ntawm G1 (ze rau qhov kev hloov G1 / S). G2 checkpoint nyob ze ntawm qhov kawg ntawm G2 (ze rau qhov kev hloov ntawm G2 / M). Spindle checkpoint yog ib feem ntawm M theem, thiab tshwj xeeb tshaj yog, ntawm tus metaphase / anaphase hloov.
Dab tsi yog qhov chaw kuaj kab mob hauv lub voj voog ntawm tes?
Nyob rau hauv mitosis, lub spindle assembly checkpoint (SAC) controls the proper attachment to and alignment of chromosomes on the spindle. SAC kuaj pom qhov yuam kev thiab ua rau lub voj voog ntawm tes raug ntes hauv metaphase, tiv thaiv chromatid sib cais.
Thaum lub sijhawm twg ntawm lub voj voog ntawm tes ua qhov chaw kuaj kab ntxaiv tshwm sim?
M chaw kuaj mob tshwm sim ze rau qhov kawg ntawm theem metaphase ntawm mitosis. M checkpoint tseem hu ua spindle checkpoint vim nws txiav txim siab seb tag nrho cov viv ncaus chromatids puas raug txuas rau spindle microtubules.
Lub hom phiaj ntawm qhov chaw kuaj kab ntxaiv hauv M theem yog dab tsi?
Lub chaw kuaj kab ntxaiv yog tus tswj hwm ntawm chromosome cais hauv mitosis thiab meiosis. Nws txoj haujlwm yog txhawm rau tiv thaiv qhov pib ua ntej anaphase ua ntej chromosomes tau ua tiav kev sib txuas ntawm bipolar rauspindle.
