Does mitosis or meiosis involve changes within the nucleus

Yes, mitosis or meiosis involve changes with in the nucleus. The process of 'nuclear division in eukaryotic cells' happens when two identical daughter cells are produced by the parent cell division. The cell division reduce the half number of chromosomes on parent cell and four gamete cells are produced.

Explanation:

The function of mitosis is to repair, grow and asexual reproduction. The meiosis process claim to produce sperm and egg cells for sexual reproduction. Mitosis produces '2n two diploid cells' that is identical to each other and original parent cell. Meiosis produce n four haploid gametes that are 'genetically unique' to each other.