| 11. | It has a polygynous mating system and copulation is initiated with vocal communication.
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| 12. | Gorillas, which have a polygynous mating system, have smaller testes than other primates.
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| 13. | Their mating systems are highly variable and can include monogamy, polygyny, and polyandry.
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| 14. | Polyandry, though, is the most common mating system of dunnocks found in nature.
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| 15. | About 42 % of flowering plants exhibit a mixed mating system in nature.
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| 16. | These are unrelated birds which have a socially polygynandrous mating system.
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| 17. | Recent research indicates that the mating system of the mountain brushtail possum is variable.
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| 18. | Their mating system has also been described as successive polygyny.
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| 19. | The mating system of this lemur has not been reported.
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| 20. | The European pied flycatcher predominately practices a mixed mating system of monogamy and polygyny.
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