What cell part is sort of the ';control'; of the mitosis process?

Is it the nucleus? Because the nucleus is, really, the ';brain'; of the cell. (managing and storing information and instructions for the other organelles). Or maybe the spindle fibres, being the ones who do the pulling? ack :S





Again, I'm not strong at all in science and am really not completely sure.What cell part is sort of the ';control'; of the mitosis process?
Well it is more complex than just 'the nucleus'.


There could potentially be a number of factors to cause a cell to mitose.


I would 'imagine' that the original signal could be external (controlled by a hormone or signal from another cell) or by a internal signal in the cell.





Basically something in the cell or from another cell will cause either: a gene to be transcribed in the nucleus which will in turn results in the translation of proteins involved in the replication of DNA) or


the signal will bind to an enzyme responsible for the replication of DNA and then the enzyme will go to work replicating the DNA.





I don't know if there is actually any gene upregulation involved in the initial process, or if enzymes or just being activated by the signal.





However, for a simplified answer, the control is probably a gene in the nucleus.


But the control could also be considered the 'signal' that activated the transcription of that gene.





But it is definitely not the spindle fibers.What cell part is sort of the ';control'; of the mitosis process?
Well, since the mitochondria supply all the power, they could be considered the ';control'; of the mitosis process, but other than that, I would guess the nucleus. :)
The nucleus defiantly controls mitosis. Through transcription, DNA inside the nucleus duplicates itself. The copied version ( or RNA) then exits the nuclear envelope to carry out the necessary instructions with genetic coded info. Ex. which proteins and amino acids to bind and how many. Once the daughter cells are of full maturity the cells split and whalah. Nucleus is the container of dark fibers called chromatin, which contain chromosomes and DNA. So I say yes. It is the nucleus.