A recurring theme is neoteny, or the retention of juvenile traits (like smoother skin and higher voices) into adulthood to elicit protective responses.

Evolutionary theories on their shape and permanent swelling compared to other primates; Waist/Hips: The importance of the waist-to-hip ratio as a fertility signal. The Midsection

Morris argues that the female body is a masterpiece of design, with traits evolved for specific survival or reproductive purposes—often to distinguish females from males or to signal fertility.

(2004) by zoologist and human behaviorist Desmond Morris provides a "head-to-toe" anatomical and evolutionary analysis of the human female . Written from a scientific and zoological perspective, the book examines how evolutionary forces, sexual selection, and cultural modifications have shaped every major part of the female body. Core Themes and Approach

Each anatomical section discusses how different societies have historically "improved" or restricted the natural form through tattooing, cosmetics, or body modifications.