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56,893 result(s) for "Apes."
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Correction: Does Sympathy Motivate Prosocial Behaviour in Great Apes?
The files extensions for the supporting video files were erroneously changed making them difficult to open. Video S1, Video S2, Video S3: Download corrected item. https://doi.org/10.1371/annotation/1fe9c2b8-84dd-44c4-a4ba-b62e0460b513.s001 Citation: Liebal K, Vaish A, Haun D, Tomasello M (2014) Correction: Does Sympathy Motivate Prosocial Behaviour in Great Apes?
Meet the ape
\"This great book introduces kids to amazing apes, such as gorillas, chimpanzees, and orangutans.\"--Publisher web site.
Primate Sociality to Human Cooperation
Developmental psychologists identify propensities for social engagement in human infants that are less evident in other apes; Sarah Hrdy links these social propensities to novel features of human childrearing. Unlike other ape mothers, humans can bear a new baby before the previous child is independent because they have help. This help alters maternal trade-offs and so imposes new selection pressures on infants and young children to actively engage their caretakers' attention and commitment. Such distinctive childrearing is part of our grandmothering life history. While consequences for other cooperative activities must surely follow, the novel rearing environments set up by helpful grandmothering can explain why natural selection escalated preferences and motivations for interactivity in our lineage in the first place, and why, unlike other aspects of infant development, social sensitivities are not delayed in humans compared with genus Pan.
Enamel proteome shows that Gigantopithecus was an early diverging pongine
Gigantopithecus blacki was a giant hominid that inhabited densely forested environments of Southeast Asia during the Pleistocene epoch 1 . Its evolutionary relationships to other great ape species, and the divergence of these species during the Middle and Late Miocene epoch (16–5.3 million years ago), remain unclear 2 , 3 . Hypotheses regarding the relationships between Gigantopithecus and extinct and extant hominids are wide ranging but difficult to substantiate because of its highly derived dentognathic morphology, the absence of cranial and post-cranial remains 1 , 3 – 6 , and the lack of independent molecular validation. We retrieved dental enamel proteome sequences from a 1.9-million-year-old G. blacki molar found in Chuifeng Cave, China 7 , 8 . The thermal age of these protein sequences is approximately five times greater than that of any previously published mammalian proteome or genome. We demonstrate that Gigantopithecus is a sister clade to orangutans (genus Pongo ) with a common ancestor about 12–10 million years ago, implying that the divergence of Gigantopithecus from Pongo forms part of the Miocene radiation of great apes. In addition, we hypothesize that the expression of alpha-2-HS-glycoprotein, which has not been previously observed in enamel proteomes, had a role in the biomineralization of the thick enamel crowns that characterize the large molars in Gigantopithecus 9 , 10 . The survival of an Early Pleistocene dental enamel proteome in the subtropics further expands the scope of palaeoproteomic analysis into geographical areas and time periods previously considered incompatible with the preservation of substantial amounts of genetic information. The enamel proteome from a 1.9-million-year-old Gigantopithecus tooth shows that the Gigantopithecus and Pongo (orangutan) lineages diverged 12–10 million years ago.