题目是 Asymmetric cell division often relies on cytoskeletal elements to generate or maintain the asymmetric distribution of cellular factors. In S. cerevisiae, what factor is localized to the bud by myosin motors? In Drosophila neuroblasts, what factors are localized apically by microtubules? 第二小题 课本(5e)上面写说 Reassembly of the entire complex at the apical end following each neuroblast division requires actin microfilaments. Generally, asymmetric protein segregation requires actin but not tubulin, 也就是说BPP和IPLG complex(BPP和IPLG都会分布在apical site) are localization by actin而不是tubulin(microtubule)倒是mitotic spindle会藉由microtubule拉开,但应 该不算是factor 所以写"目前为止没观察到"应该比较没问题 看起来像题目出错(故意的?) -- --

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