Sex is at the center of every individual's behavior in the animal world. This, of course, has a direct impact on the shape, size, morphology, and functioning of their reproductive organs. All of the above are connected to the famous phenomenon of sexual selection, which Darwin himself considered so important that he dedicated an entire book to it! However, in the century that followed, there were very few related studies: modesty and taboos played their role. Today, of course, things are changing...

In "Genetic Games," evolutionary biologist and ecologist Menno Schilthuizen manages to gather all the new elements on the subject and highlight, with humor, many sketches and diagrams, vivid and sometimes suggestive language, but always documented, the evolution of sexual behavior through the evolution of reproductive organs. By outlining a world that is sometimes wild and sometimes funny (as life ultimately is), he dispels misunderstandings and prejudices (about good and evil) and helps us understand that the chariot of the evolution of life (which has no driver) is largely driven by the two "horses" of sexual selection. One is male and the other is female: they often disagree with each other, temporarily reconcile, until the next conflict, but they constantly change form and behavior.