1.The ancestral characteristics of the species are flat face with forward facing eyes and molars present because they all contain these features. Sagittal crest, large cranium , similar width of dental arcade to the length, chain and supraorbital bow are derived characteristics because they are specific to all hominins and are not found from their ancestor.
2. It can be concluded that both hominins and modern apes share flat face with forward facing eyes and molars present. The Phylogenetic Tree shows that the modern apes diverged from hominins. This implies that modern apes and hominins share a same ancestor, but early hominins did not evolve from modern apes. The closest relative of human (Homo sapiens) is Homo neanderthalensis. We share many characteristics, such as chain, large cranium and similar width of dental arcade to the length. One of differences is Homo neanderthalensis has Supraorbital bow, not human does not.
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The skull proportion index conveys the proportional relationship between the face and the cranium. A larger index indicates a larger cranium in comparison to the face. The skull proportions of Homo sapiens, Homo neanderthalensis, and Homo erectus are relatively large, which are around 100. This suggests that Homos have large brain and cranium. Brain is associated with intelligence. Hence, homo can perform more complex activities, such as using sophisticated stone tools, cooking, and mashing food. Meanwhile, the skull proportions of Australopithecus afarensis and Paranthropus boisei are relative small. This suggests that Australopithecus afarensis and Paranthropus boisei have small brain and cranium. They can perform relatively simple activities, such as using basic stone tools, instead of sophisticated stone
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Monkeys and humans have been compared for years, we have all heard the expression “Monkey see, Monkey do”. Analyzing individual primates at the Santa Ana Zoo was quite an experience because when I use to hear monkeys I use to only picture one certain appearance and that was a brown monkey with a light brown face, and a long tail. Moneys are not just monkeys, humans aren’t just humans, and apes aren’t just apes they are all primates which is a mammal that has certain characteristics such as: flexible fingers and toes, opposable thumbs, flatter face than other mammals, have eyes that face forward and spaced close together, large and complex cerebrum, and they are also social
Primates are one of the most interesting mammals on earth, not only because of their complex social structures, but because they hold so many similar characteristics to humans. Primates are often cited as our closest living relatives and on two separate occasions I observed four separate species of primates at the San Diego Zoo that can justify their use of their physical characteristics and behaviors that may be similar as well as different to the other primates and ours.
The Homo habilis was known as “the skilled human or handy man” (Standford 273). They got this name because they made tools. Homo habilis have a brain size of aproxamiltly 509 cc to aproximitly 775 cc. They also have a encephalization quotient (EQ) of about 2.73 to 3.38.
Throughout the term, reading the book, “Through a Window” by Jane Goodall has been quite intriguing for me, in that it has inspired me with new ideas and perceptions about how our own species has evolved over time. I have really enjoyed seeing the many similarities that hominids share with other primate species, especially chimpanzees. Goodall’s research only further proves that we are not only extremely biologically similar to chimpanzees in our DNA, but have many behavioral similarities as well. The film, “Monkey in the Mirror” also shows support for our likeness in intellectuality. These documented findings on chimpanzee and human resemblances provides the strong evidence needed to conclude the fact that humans do indeed share a common ancestor with great apes.
Foreheads began to develop in the later members of the species, most likely as a result of an expanding frontal lobe (that part of the brain that we believe controls many of our higher functions such as reasoning, foresight and concentration) (Johanson and Shreeve 1989). Homo erectus had a lighter jaw than did Homo Habilis (Johanson and Shreeve 1989).
40) {11.10}Some people argue that we should eat lower on the food chain. Describe these reasons. Others argue that this is a generalization with some exceptions. What is their position?
We share almost 99 percent of our genetic material with chimpanzees. Yet we have several traits that are very different. Two legged walking, or bipedalism seems to be one of the earliest of the major hominine characteristics to have evolved. To
According to National Geographic, scientists have sequenced the genome factor of the chimpanzee and found that humans are 98.5% similar to the ape species. The chimpanzee is our closest relative in the animal kingdom; however, some people are not aware of our resembling traits with chimpanzees. Jane Goodall’s, In the Shadow of Man, describes some similar traits humans and chimpanzees have such as their facial expressions and emotions, use of tools, and diet.
Homo Heidelbergensis: Lower half of skull pops out more than the rest of the ‘homo skulls’
According to “Decoding Neanderthals’ they were consider primitive; without language and art or a high level of thinking. These species hunted by brute force with a simple stone tool. Also, that their intellect cannot be associated or compared with modern humans because their behavior was too way primitive. They began to disappear 40,000 years ago as modern humans came on the scene, stated by “Decoding Neanderthals” documentary movie. However, according to the genetic evidence shows a mysterious presence related with the modern humans genes. Neanderthal’s psychical features demonstrate some facts that these Homo species possessed intelligence. For example, big noses, bulky physiques-adaptation to cold, shorter than Homo sapiens, but bones were thicker, oblique forehead and heavy eyebrows. Also, often Neanderthal’s craniums are larger than modern humans. They had larger ankle joint, elbow joint and shorter forearm, broader ribcage and lower cranium. They were the most advanced group of primates, except modern humans. Neanderthals weren’t fewer intelligent than modern people; they had clothes and had some kind of language. Neanderthal living space showed complex use of the instrument, abstract thoughts and speech, burial of their dead and manufactured primitive art objects. Some stereotypes against these species are that they had limited stone tools and no art or personal ornaments; therefore they seemed less advanced than modern humans. Also, stereotyping their intelligence
One of the main reasons why we are so interested in the other primates is that by looking at them we can obtain some ideas of what our ancestor must have been like a few millions years ago. Even though, we are not descended from any modern-type monkey or ape, our lineage does appear to have gone through stages in which we were a medium-sized, reasonably intelligent creature with good binocular vision, hands that were good at manipulation and the ability to climb trees. An evolutionary trend in primates involves the development of offspring both before and after birth and their integration into complex social systems. Another trend in primate evolution has been toward a more elaborate brain. In addition to brain size and gestation periods,
Over the course of millions of years, primates’ evolutionary ancestors developed their brains to the point that the brain became the most energy intensive organ in the body. Large brains are very costly investments for an organism, both in terms of percentage of energy consumption, and in terms of the period spent outside the womb in which the organism is unable to defend itself (Cheney & Seyfarth, 2007). Based on evolution scientists know this fact to be true. The only question remaining is: what in the many varied environments of primates led to this overall increase in relative brain and skull sizes?
The teeth of Homo erectus showed evidence of formation similar to that of ancient apes (“Homo Erectus”). Its other superior nature is believed to be its ability to use stone tools such as hand axes. There is also evidence of showing concern for their old ones and ensuring their well-being
When Planet of the Apes opened in theaters, few people knew what to expect. To most, the idea of a movie with the premise of a planet full of intelligent apes went against everything they had been taught. The initial attraction was the superb cast, spearheaded by Charlton Heston who portrays Taylor, an astronaut who crashes onto the planet. Heston was joined by many popular actors and actress such as, Roddy McDowell as Cornelius, Maurice Evans as Dr. Zaius and Kim Hunter as Zira. Though the cast may have been the initial draw, the content is what has made the movie Planet of the Apes a classic that will continue to be enjoyed for generations to come.