Animals exhibit variations from controls in the organization of chromatin, including in relation to associated complexes, that occur during the mitotic cell division cycle.
Variations in the form or composition of a structure in the cell nucleus which contains the genetic material encoded as DNA and surrounded by histone proteins and other regulatory elements compared to control. In C. elegans the normal cell contains 5 pairs of 'autosomes' and one or two X chromosomes (Wormatlas).
Any variation in the division of the eukaryotic cell nucleus to produce two daughter nuclei that contain the identical chromosome complement of their mother compared to control.