Book excerpt: The Pregnant Body Book looks at the nature of human pregnancy, including how it has changed through evolution, and explores the anatomy and physiology of both the male and female reproductive systems. The mysteries of DNA and genetics are unraveled and explained, including patterns of inheritance, such as hair or eye color. The Pregnant Body Book examines the development of the baby in the womb and the parallel changes in the mother's body, structured to follow the process week by week, and tracking every anatomical and physiological change in unprecedented detail. Specially commissioned artworks, illustrations, scans, and photography show exactly how a baby changes and grows during pregnancy, and how the female body adapts to carry it. The processes of labor and birth are explained with step-by-step illustrations and easy-to-grasp text. The Pregnant Body Book also includes a section on disorders provides straightforward illustrated information on problems that can occur before, during, and after birth. A must-have reference for mothers-to-be, students, and curious minds.