However, once a lineage becomes fixed for a derived trait ... between the species by invoking just four events of trait evolution. As this example illustrates, descendants of an ancestral lineage ...

Researchers attempted to decode bonobo calls by recording their social context, then analyzed how the primates string ...

Bonobos’ grunts, peeps and whistles may share an advanced linguistic property with human language ...

In this diagram, a population that was ancestrally fixed for white flowers passes through a period of polymorphism before ultimately becoming fixed for the derived trait of yellow flowers.