The 'promiscuous' monkeys of Gombe National Park: DNA reveals two species have been interbreeding

Two species of'promiscuous' monkeys in Tanzania's Gombe National Park have likely been interbreeding for hundreds or even thousands of years, according to a new study. Using DNA extracted from the feces of 144 guenon monkeys in the park, researchers have documented evidence of ongoing mating between two genetically distinct groups. Guenon monkeys are known for their flashy colors and striking facial features, including large noses and bushy beards, which experts have long thought to be species-specific signals used for mate selection. But, the new findings suggest they might not be so picky after all. Roughly 15 percent of the population consists of hybrids, which are identified by their combined markings from both parental species.