How the female baboon body has the final say in sperm selection

Just because a female olive baboon has mated with a specific male doesn't mean he will be the father of her offspring.
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Monogamy : mating strategies and partnerships in birds, humans, and other mammals / edited by Ulrich H. Reichard, Christophe Boesch

Monogamy : past and present / Ulrich H. Reichard -- Evolution of monogamy : mating relationships, parental care and sexual selection / Anders Pape Møller -- Mate guarding and the evolution of social ...