IPA: /ˌænəˈdʒɛnɪsɪs/
KK: /ænəˈdʒɛnɪsɪs/
A process in evolution where one species gradually changes into another without splitting into different branches.
The concept of anagenesis helps explain how species can evolve over time in a straight line.
Anagenesis is formed from "ana-" (meaning up or back) and "genesis" (from Greek "genesis", meaning origin or creation). The term describes a process of evolution where a species evolves into a new form without branching into separate lineages, thus representing a return to an earlier state or a new beginning.
Think of 'up' or 'back' ('ana-') leading to a 'new origin' ('genesis') — this helps you remember that anagenesis refers to a process of evolution that leads to a new form.