Which of the following does not occur during mitosis?
a) Condensation of the chromosomes
b) Replication of the DNA
c) Separation of sister chromatids
d) Spindle formation
e) Separation of the spindle poles
DNA replication in the cell cycle is a necessary process which forms the genetic information for a cell about to be created. Without DNA replication, the new cell would not be able to properly function and create its own resources.