Final answer:
Monkeys and other primate species tend to spend more time together due to social behaviors and genetic relationships, with studies showing social bonds and pair bonds playing significant roles, and the fact that primates such as chimpanzees and humans share a very high percentage of DNA.
Step-by-step explanation:
Do monkeys spend more time together because they have similar traits? While no single answer fits all situations, monkeys and other primate species, including humans, often spend more time together due to similar social behaviors and genetic relationships. For example, Rhesus monkeys showed in studies by the Harlows that social comfort is more important than food, indicating the significance of social bonds in primates. Additionally, New World species like tamarins and marmosets form pair bonds and cooperatively raise their young, further demonstrating the role of close social relationships. Moreover, the genetic and behavioral similarities found within the primate family, which includes gorillas, chimpanzees, and humans who share more than 97% of their DNA, also suggest that these similar traits facilitate social bonding and time spent together.