A characteristic trend in hominin evolution has been an increase in brain size,especially with the advent of the genus Homo.

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This statement is true. Hominin evolution has been marked by a gradual increase in brain size, particularly with the emergence of the genus Homo. From early hominins such as Australopithecus to Homo erectus and later Homo species, there is a pattern of enlarged brain size and complexity. This trend in brain evolution is thought to be linked to the development of tool use, language, and other advanced cognitive abilities.

A Characteristic Trend in Hominin Evolution Has Been an Increase