This biological law always made my head (and heart) hurt. How could one sex be promiscuous and the other chaste – after all, who were the males having sex with if the females were all so demure? It didn’t make sense to me. And if a female’s sexual behaviour is prescribed by her gametes, then how can we explain the unrestrained sexuality of the lioness? Well, it turns out the female lion is by no means the only strumpet in the animal kingdom. The time is long overdue for a radical reappraisal of anisogamy’s clichéd sex roles – if only our species is ready to accept them.
