21. Another mixed mating system is referred to as dimorphic cleistogamy. 22. Studies of primates, including humans, support the relationship between testis size and mating system . 23. Chimpanzees, which have a promiscuous mating system , have large testes compared to other primates. 24. These effects include mating system , disrupts of reproductive physiology. 25. A number of models have been used to describe the parameters of plant mating systems . 26. Penile spine morphology may be related to mating system . 27. Birds are one of the only major taxa where monogamy is the dominant mating system . 28. Southern yellowjackets have a polygynous mating system : a colony has more than one queen. 29. This mating system is an example of male-territory-visiting polygamy. 30. The parasitic nature of the species goes hand in hand with their polygynous mating system .
