21. These butterflies exhibit a polyandrous mating system. 22. Polygynous trios compared to polyandrous trios showed that having more eggs lowered the group fitness. 23. Polyandrous females encounter sexual harassment when courted by males resulting to be costly to females.24. Marriages tend to be polyandrous , including group marriages and Mannie's own line marriage. 25. In many polyandrous systems, the males and the female stay together to rear the young. 26. The females are polyandrous and will help to defend the nests of up to four mates. 27. Female red flour beetles engage in polyandrous mating behavior in order to increase their fertility assurance. 28. Polyandrous union occurs in this region when a woman marries the eldest son in a family.29. Whether it was polygynous ( patriarchal ) or polyandrous ( matriarchal ) is the big question. 30. The female is polyandrous , initiating courtship among several males and expelling rival females from her territory.
