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The common chimpanzee has a troop culture based on beta males led by an alpha male, and highly complex social relationships. The bonobo, on the other hand, has egalitarian, nonviolent, matriarchal, sexually receptive behaviour. [52] Bonobos frequently have sex, sometimes to help prevent and resolve conflicts.
Formerly the bonobo was known as the "pygmy chimpanzee", despite the bonobo having a similar body size to the common chimpanzee. The name "pygmy" was given by the German zoologist Ernst Schwarz in 1929, who classified the species on the basis of a previously mislabeled bonobo cranium, noting its diminutive size compared to chimpanzee skulls.
The chimpanzees in the area have little fear of humans, because of a local legend, that humans and bonobos were cousins. "According to this belief, an older brother in a family of bonobos held to their traditional lifestyle and his descendants thus remained in the forest as bonobos. However, his younger brother was tired of eating raw foods.
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Sumatran orangutan (Pongo abelli) Hominoidea is a superfamily of primates. Members of this superfamily are called hominoids or apes, and include gorillas, chimpanzees, orangutans, gibbons, bonobos, and humans. Hominoidea is one of the six major groups in the order Primates. The majority are found in forests in Southeastern Asia and Equatorial Africa, with the exception of humans, which have ...
Demonic Males begins by explaining that humans, chimpanzees, gorillas and orangutans are a group of genetically related great apes, that humans are genetically closer to chimps than chimps are to gorillas, and that chimps and bonobos are most closely genetically related.
The split between the common ancestors of the chimpanzee and bonobos then took place about 1.5 to 2 million years ago with the two lineages giving rise to the two current extant species. In the past, bonobos were incorrectly relegated to subspecies status within the species chimpanzee. It is now understood that bonobos are an entirely different ...
[11] [12] [13] A study comparing the genomes of 69 modern bonobos and chimpanzees found between 0.9–4.2% of gene flow from ancient bonobos and an archaic great ape lineage to modern bonobos, allowing researchers to reconstruct 4.8% of this ghost population's genome. [11]