Monogeny is a term used in biology to describe the reproduction of a species through a single ancestral lineage. The term has various synonyms that are commonly used in scientific literature, such as the term "monophyly," which is often used to describe organisms that have evolved from a single ancestor. "Cladogenesis" is another synonym for monogeny, which refers to the splitting of a single lineage into two separate lineages. "Anagenesis" is also used as a synonym for monogeny, which refers to the evolution of a single lineage through time. Overall, these synonyms help to describe the complex process by which species evolve and diversify over time.