Question

Trace the various components of human evolution in the light of the following characteristic:

Brain size and function

Answer 1

1. Early ancestors such as Dryopithecus had relatively smaller brains.
2. Over millions of years, brain size increased dramatically in the genus Homo, especially in Homo habilis, Homo erectus, and modern Homo sapiens. 
3. The brain enlargement is associated with greater cognitive abilities, complex tool use, development of language, and social behaviors.
4. Modern humans (Homo sapiens sapiens) show a much enlarged cerebrum with advanced functions like logical thinking, speech, culture, art, and science.