It is that region which initiates the development of microtubules. This region is called the centrosome. It is the centrosome and not the centriole which is responsible for making spindles because what we call 'spindle fibres' are basically microtubules. This explains why plant cells and fungi can produce spindle fibres during mitosis.
expedient(Noun) A method or means for achieving a particular result, especially when direct or efficient; a resource. expedient(Adjective) Simple, easy, or quick; convenient. Most people, faced with a decision, will choose the most expedient option.
The adjective expedient describes something that provides an easy way to achieve a goal or result, but it's not necessarily a moral solution. Something expedient is helpful to you. If you vote your friend in for student body president just because you know sheâll hook you up â thatâs an expedient choice. But expeditious is speedy, like your expeditious exit from the voting booth because you know didnât do the right thing.