Recent research suggests, however, that this is an oversimplification and that chromosomes may actually occupy specific territories within the nucleus ... part of the cell cycle.
Transcript processing provides an additional level of regulation for eukaryotes, and the presence of a nucleus makes ... events in the cell. The eukaryotic cell cycle provides a good example ...
it must grow and make copies of all the organelles such as mitochondria and ribosomes. The cell must also replicate the chromosomes in the nucleus, then it can divide by mitosis.