To truly grasp these processes, it helps to look at them through the lens of a , tracking the "C-value" (amount of DNA) and "n-number" (number of chromosome sets) at every stage. 1. The Starting Line: Interphase (S-Phase)

The continuity of life depends on the accurate transmission of genetic information from one generation of cells to the next. At the heart of this process lies the cell cycle and its two distinct forms of division: mitosis and meiosis. While both are mechanisms of nuclear division, they serve fundamentally different purposes—somatic maintenance versus gamete formation. A powerful way to compare these processes is by tracking the quantitative changes in , often denoted as the C-value (where "C" represents the standard DNA content of a haploid genome). By following the journey of DNA from interphase through cytokinesis, one observes that mitosis maintains genetic constancy, while meiosis achieves genetic reduction and diversification.

always doubles the DNA amount (C), but not the set number (n).

No DNA replication occurs between Meiosis I and II. The cell starts Meiosis II with a 2C DNA content. In anaphase II, the sister chromatids finally separate. At the end of telophase II and cytokinesis, each of the four resulting gametes contains a 1C DNA content. The original 4C of DNA has been partitioned into four genetically unique cells, each with half the DNA of the original diploid parent.