Opinion: The biggest sperm come in the smallest packages – and other odd facts about male sex cells
Jacob Dunn (Division of Biological Anthropology) discusses why sperm are the most diverse cells found among animals.
Calls vs. balls: monkeys with more impressive roars produce less sperm
Evolutionary ‘trade-off’ between size of throat and testes discovered in howler monkeys furthers Darwin’s theory of sexual selection and corresponds to mating systems: males with larger throats but smaller testes often have exclusive access to females, while those with larger testes share mates.
