Both unicellular and multicellular organisms undergo mitosis. What are the differences, if any, observed in the process between the two?

Criteria	Unicellular organisms	Multicellular organisms
DNA replication	DNA replication and nuclear division occurs almost simultaneously.	DNA replication occurs in the S phase after which nuclear division occurs in mitotic phase.
Formation of spindle apparatus	Usually absent (as in prokaryotes).	Present.
Purpose	A mode of reproduction.	A means of tissue repair or growth of the organism.