In the Marmoset, female parental investment is high and male parental investment is high. You would predict that the preferred mating system for the Marmoset is

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Quizplus · Accepted Answer

In species where both male and female parental investment is high, monogamy is often the preferred mating system. This is because the high investment from both parents in the offspring increases the chances of survival and success of those offspring, making a cooperative, monogamous relationship advantageous.

In the Marmoset, Female Parental Investment Is High and Male