books.google.co.uk - This book represents the first analysis of the evolutionary significance of sperm phenotypes and derived sperm traits and the possible selection pressures responsible for sperm-egg coevolution.An understanding of sperm evolution is fast developing and promises to shed light on many topics from basic...http://books.google.co.uk/books/about/Sperm_Biology.html?id=kctYNbO1fE0C&utm_source=gb-gplus-shareSperm Biology