During mitosis, the nucleus ____.

A) makes a complete copy of each pair of chromosomes
B) splits and retains one-half of each pair of chromosomes
C) does not make any changes
D) undergoes cytokinesis
E) undergoes two divisions

Mitosis

A type of cell division that produces ordinary body, or somatic, cells; each new cell receives a complete set of paired chromosomes.

Pair of Chromosomes

Two chromosomes, one from each parent, that are alike in size, shape, and gene arrangement, constituting a matched set in a diploid cell.