Chimps and Bojobo differ for a multiple factors, but these two aren't part of them in my opinion. PS: I don't think and I've never read nothing about this "tool oriented" and "social oriented" systems. I strongly suggest to watch the first or second (I dont remember exactly) lecture of Sapolsky's Human Behavioral Biology course that you can find on YouTube in which he talks about this. Consequences as aggressivity, sexual life, hierarchical system ecc. This feature has important behavioral consequences because it depends on the kind of sexual selection (intra-Sexual for chimpanzees and inter-sexual in bonobo), parenting style ecc. In fact you can see that males' bodies and females' body size is very different in chimpanzees and practically the same in Bonobo, humans are in the middle. However, as far as I know, we have one measurable variable which tell us that we are something in between, approximately at the middle, namely the body-size sexual dimorphism. Is very difficult to answare because there are many variables along this axe and most of them are difficult to measure. This figure may still sound impressive, but most DNA is used for basic cellular functions which all living things share. Genetic comparison is not simple due to the nature of gene repeats and mutations, but a better estimate is somewhere from 85 to 95. My personal opinion is that we behave in similar ways as both, just in much more complex and abstract ways. It is often said that humans and chimpanzees share 99 the same DNA. Conceptually, we are equally evolved away from both chimps and bonobos, we cannot be closer to one than the other. Humans have had 2-3x more time evolving so we are much different. From what I remember of my undergrad anth classes, bonobos use sex as a strategy to manage the tension when they come upon these trees in season.īoth Pan species have been evolving away from their common ancestor for only about 2 million years, but the human line split from the common ancestor of all 3 species about 4-6 million years ago. Base pair sequences within DNA can be split into exons, sequences that directly code for proteins, and introns, sequences that do not directly code for a specific protein. Not all parts of the DNA sequence directly code for protein. Bonobos have large trees that produce more than enough fruit for a troop and have been observed sharing that space with other species and sometimes other troops. The total DNA sequence is made up of base pairs, but not all sequences of base pairs serve the same function. Chimpanzees have less available fruit trees so learned to supplement with nuts and termite mounds (tool use) and are more territorial so they can guarantee access when their trees do fruit. And a big reason they have these different strategies is due to variations in resource availability in each habitat.
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