Here's how it works:

* Diploid Stage (Sporophyte): This stage is characterized by having two sets of chromosomes (2n). The sporophyte produces spores through meiosis, which are haploid (n).

* Haploid Stage (Gametophyte): This stage has a single set of chromosomes (n). The gametophyte produces gametes (sperm and egg) through mitosis.

* Fertilization: When a sperm and egg fuse, they form a diploid zygote, which develops into a new sporophyte.

This cycle continues, with the sporophyte and gametophyte stages alternating.

Examples of organisms with alternation of generations:

* Plants: Most land plants, including ferns, mosses, and flowering plants, exhibit alternation of generations.

* Algae: Some types of algae also have this life cycle.

Important Note: The relative prominence of the sporophyte and gametophyte stages can vary between different organisms. In plants like mosses, the gametophyte is dominant, while in flowering plants, the sporophyte is dominant.