👉 In biology, a term used to describe the process of two or more organisms reproducing from a single cell. This is known as a clade, where each clade represents a separate species. In this context, "cleistogeny" refers to the unique traits that are shared between all members of a clade, such as physical characteristics, genetic material, or reproductive strategies. For example, in the family Aves (birds), clades may include families like Apes, Canaries
