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A 2014 whole-genome molecular dating analysis indicated that the gibbon lineage diverged from that of great apes (Hominidae) around 17 million years ago (16.8 ± 0.9 Mya), based on certain assumptions about the generation time and mutation rate. [1] The extinct Bunopithecus sericus was a gibbon or gibbon-like ape. [3]
Extant primates exhibit a broad range of variation in sexual size dimorphism (SSD), or sexual divergence in body size. [4] It ranges from species such as gibbons and strepsirrhines (including Madagascar's lemurs) in which males and females have almost the same body sizes to species such as chimpanzees and bonobos in which males' body sizes are larger than females' body sizes.
This may have led to the development of a suite of physical characteristics, distinct from their great ape relatives, to adapt to their habitat of dense, canopy forest. [37] These crucial findings in genetics have contributed to the use of gibbons as a genetic model for chromosome breakage and fusion, which is a type of translocation mutation.
The authors consider the divergence time between Old World monkeys and hominoids to be 30 million years ago (MYA), based on fossil data, and the immunological distance was considered to grow at a constant rate. They concluded that divergence time of humans and the African apes to be roughly ~5 MYA. That was a surprising result.
Homininae (the hominines), is a subfamily of the family Hominidae (hominids). (The Homininae— / h ɒ m ɪ ˈ n aɪ n iː / —encompass humans, and are also called "African hominids" or "African apes".) [1] [2] This subfamily includes two tribes, Hominini and Gorillini, both having extant (or living) species as well as extinct species.
For humans, the Big Five personality traits, also known as the five-factor model (FFM) or the OCEAN model, is the prevailing model for personality traits. When factor analysis (a statistical technique) is applied to personality survey data, some words or questionnaire items used to describe aspects of personality are often applied to the same person.
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 ...
The Hominoid Personality Questionnaire (also: HPQ) is a personality rating instrument used for non-human primates. It is an extended version of the Orangutan Personality Questionnaire, which was an extended version of King and Figueredo's [ 1 ] Chimpanzee Personality Questionnaire.