![]() Excel file (*.xlsx) with multiple sheets containing results of all differential expression analyses presented in the manuscript as well as GO enrichment analysis for the differentially expressed (DE) genes: Sheet 1: Genes specific to APs, not DE between chimpanzee and human Sheet 2: GO enrichment analysis for genes of sheet 1 Sheet 3: Genes specific to Neurons, not DE between chimpanzee and human Sheet 4: GO enrichment analysis for genes of sheet 3 Sheet 5: Genes specific to APs and upregulated to human compared to chimpanzee Sheet 6: GO enrichment analysis for genes of sheet 6 Sheet 7: Genes specific to Neurons and upregulated to human compared to chimpanzee Sheet 8: GO enrichment analysis for genes of sheet 7 Sheet 9: Genes specific to APs and upregulated to chimpanzee compared to human Sheet 10: GO enrichment analysis for genes of sheet 6 Sheet 11: Genes specific to Neurons and upregulated to chimpanzee compared to human Sheet 12: GO enrichment analysis for genes of sheet 11 Sheet 13: GO enrichment data used to generate Figure 3F. "There's an aggression toward individuals that are not in their group."īut chimps are often seen as friendly and cute animals because many facilities use preventive measures to prevent the aggression, he said.Figure 3-source data 2: Results of differential gene expression analyses. "They can adapt very well to their environment but that doesn't preclude that they are territorial and they are violent and wild animals first," Ross said. The emotional impulses also play a role in how aggressive they can become, he said. They directed the violence towards Andrew whom they feel was infringing on their territory."Ĭhimpanzees have a wide range of emotions and they are similar to what humans experience, yet they are known to have erratic and unpredictable impulses, Ross said. "This is why we come to the conclusion, as far as our expertise goes, that it was a territorial defense. ![]() "They have no anger," Cussons said of the chimps. The two chimps saw Oberle's crossing the fence into the chimps' space as a violation of their territory, prompting them to take action, Cussons said. In Thursday's case, however, an internal investigation by the Jane Goodall Institute near Johannesburg showed that the chimps might not have intended to be malicious, Eugene Cussons, director of the institute, told "Good Morning America" today. Such physical lack of control can potentially lead some chimps to become more aggressive when physical. ![]() As a result, sometimes chimps use more of their muscle strength than necessary, according to Walker's theory, published 2009 in the journal Current Anthropology. ![]() In chimps, the muscle fibers closest to the bones - those deemed to be the source of strength of both chimps and humans – are much longer and more dense, so a chimp is able to generate more power using the same range of motion, Ross of the Lester Fisher Center said.Īlso, unlike humans, chimpanzees have less control over their muscles. Research suggests the difference in strength between the two lies in the muscle performance. Indeed, chimpanzees have been shown to be about four times as strong as humans comparable in size, according to evolutionary biologist Alan Walker, formerly of Pennsylvania State University. ![]()
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