Metaphase ua rau anaphase, lub sijhawm uas txhua tus chromosome tus viv ncaus chromatids cais thiab txav mus rau cov ncej ntawm tes. Enzymatic tawg ntawm cohesin - uas txuas cov viv ncaus chromatids ua ke thaum lub sijhawm prophase - ua rau qhov kev sib cais no tshwm sim.
Puas tus muam chromatids cais thaum anaphase 1 lossis 2?
In anaphase I, cov chromosomes homologous tau sib cais. Hauv prometaphase II, microtubules txuas mus rau kinetochores ntawm tus viv ncaus chromatids, thiab tus muam chromatids yog teem rau ntawm nruab nrab ntawm cov hlwb hauv metaphase II. Hauv anaphase II, tus muam chromatids tau sib cais.
tus muam chromatids cais dab tsi?
Tus muam chromatids yog khub ntawm cov ntawv luam zoo tib yam ntawm DNA koom nrog ntawm qhov chaw hu ua centromere. Thaum lub sij hawm anaphase, txhua khub ntawm chromosomes tau muab cais ua ob qho tib si, chromosomes ywj siab. … Tus muam chromatids tau sib cais ib txhij ntawm lawv cov centromeres.
Tus muam chromatids cais thaum lub sijhawm meiosis?
Meiosis II yog kev faib thib ob ntawm meiosis. Nws tshwm sim nyob rau hauv ob qho tib si ntawm cov ntxhais tshiab tsim lub hlwb ib txhij. Meiosis II zoo ib yam li Mitosis nyob rau hauv uas tus muam chromatids yog cais.
Yuav ua li cas thaum cytokinesis?
Cytokinesis yog lub cev txheej txheem ntawm kev faib cell, uas faib cov cytoplasm ntawm niam txiv cell rau hauv ob tug ntxhais hlwb. Lub nplhaib contractileshrinks ntawm tus kab zauv ntawm lub cell, pinching lub plasma membrane nyob rau hauv, thiab ua dab tsi hu ua cleavage furrow. …
