Explore the fascinating world of sex determination and evolution in this 38-minute lecture by Professor Judith Mank from University College London. Delve into the genetic programming of sex and the evolutionary forces shaping differences between males and females across various species. Discover diverse sex determination mechanisms, including Z sex chromosomes, environmental triggers, and sex changers. Examine the concept of beauty in nature, gene expression patterns, and sex-biased transcriptomes. Learn about unique mating strategies like subordinate males in the ocellated wrasse. Gain insights into how evolutionary pressures create conflicts between sexes and influence behavior, appearance, and survival across different organisms.