During mitosis, the main focus is on the replication of cells, specifically the genetic material (DNA) within the cell, which results in two identical daughter cells. However, to be more accurate in the context of your provided options, the DNA and associated proteins (chromatin) are what replicate.
So the most fitting response among the options you provided would be:
- cells (though technically, it's the genetic material and related components that replicate to facilitate cell division).
If you meant to ask specifically what is duplicated as part of the process, it would be more accurate to say the chromosomes/DNA, but that wasn't an option here.
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