"In tracing a single human pregnancy from conception to breastfeeding, David Bainbridge, a reproductive biologist, reveals how pregnancy actually works - the scientific facts missing from 'how to' guides for mums. In doing so, he explores some of the age-old questions of medical science: why do women have a limited supply of eggs? How does an embryo halt its mother's menstrual cycle? How does a mother 'know' she is pregnant? What's the evolutionary role of morning sickness? How is a baby put together? Why does the mother accept the 'foreign' baby? Why are 'identical' twins never actually identical? How do mother and baby survive birth? And who times the onset of labour - mother or baby?"--BOOK JACKET.Title Summary field provided by Blackwell North America, Inc. All Rights Reserved