Chapter 32 - Deuterostome Animals - 32.5 - Humans Evolved among the Primates - 32.5 Recap - Learning Outcomes - Page 711: 2

Neoteny refers to the retention of juvenile features into adulthood. Human skulls largely retain their shapes and sizes throughout development, leading to a smaller jaw and a larger brain case. Biologists believe that a regulatory gene mutation first led to the redesign of the human skull.

Neoteny refers to the retention of juvenile features into adulthood. Human skulls largely retain their shapes and sizes throughout development, leading to a smaller jaw and a larger brain case. Biologists believe that a regulatory gene mutation first led to the redesign of the human skull.