The geneticist-author of The Seven Daughters of Eve offers a close-up study of the defining characteristic of men, and the Y chromosome in their DNA, and explains why this could be men's fatal flaw, drawing on the latest research in a variety of scientific fields to explore such issues as the potential for a male homosexual gene and the genetic causes of male aggression. Reprint. 30,000 first printing. The inside story of the Y chromosome's fatal flaw, as told by one of the world's leading geneticists. Acknowledgements ix Prologue 1(102) 1 The Original Mr Sykes 5(14) 2 The Lonely Chromosome 19(12) 3 Ribbons of Life 31(10) 4 The Last Embrace 41(6) 5 Sex and the Single Chromosome 47(13) 6 How to Make a Man 60(14) 7 Sex Tips from Fish 74(6) 8 Why Bother with Sex? 80(11) 9 The Ideal Republic 91(12) 10 The Sense of Sex 103(5) 11 The Separation of the Sexes 108(10) 12 A War on Two Fronts 118(4) 13 A Rage to Persuade 122(7) 14 Men of the World 129(21) 15 Blood of the Vikings 150(13) 16 The Y-chromosome of Somhairle Mor 163(20) 17 The Great Khan 183(5) 18 The Old School Register 188(17) 19 The Eleven Daughters of Tracy Lewis 205(16) 20 The Slaughter of the Innocents 221(4) 21 The Rise of the Tyrant 225(17) 22 The Sperm of Tara 242(12) 23 The Gay Gene Revisited 254(20) 24 Gaia's Revenge 274(8) 25 Lifting the Curse 282(25) Afterword 307(2) Index 309