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Essay on darwin's theory of evolution
Genetic drift and evolution
Essay on darwin's theory of evolution
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1.) Quadrapedalism- Using all four limbs to support the body during locomotion. The majority of quadropedal primates are arboreal, such as the bearded saki, there are some terrestrial quadropedal primates though, such as the savanna babboon. Typically, the limbs of terrestrial quadrupeds are of equal length. In arboreal quadrupeds forelimbs are shorter and may be 70-80% as long as the hind limbs.
Brachiation- Arm swinging. An example of a primate that uses brachiation exclusively is siamangs of Southeast Asia. Other primates are called seminbrachiators, use a combination of brachiation and leaping, such as the spider monkey. These primates are mainly arboreal, and are characterized by arms longer then legs, short lumbar spines long fingers and small thumbs.
Vertical clinging and leaping- A form of locomotion in which the organism supports itself vertically by grasping onto tree trunks while their knees and ankles are flexed tightly. These primates, such as the indri, are characterized by their long hind limbs, and long fingers. These primates are mainly arboreal.
2.) When Darwin was developing his theories on evolution, he was afaid to publish his findings due to the christian beliefs that were widely accepted at the time. Religious knowledge would have it that god created all species, and therefore since the creation no new species could have come into existence. Through science we have discovered evolution, variation and extinction. These beliefs obviously contradict one another, and often they confuse us. There are some similarities in these beliefs though, christian belief in the “Great chain of being” resemble the invention of Linnaus, the taxonomic system.
3.) Variation is the inherited difference between individuals, in effect these difference may increase or decrease the organisms ability to reproduce successfully, this process is called natural selection. The basic evolutionary sources of variation are mutation, recombination, natural selection, drift and gene flow.
5.) Primates and all mammals share a series of characteristics such as: body hair, long gestation and live birth, mammary glands, different types of teeth, ability to maintain a constant body temperature, increased brain size and a considerable capacity for learning. Scientists created a special order called primates, because they share many characteristics unique to their order: a tendency toward erect posture, a flexible, generalized limb structure, hands and feet w/ a high degree of apprehensibility, retention of 5 digits on hands and feet, an opposable thumb, nails instead
: Primates didn’t just appear among Earth, but they evolved. The coevolution has to do with flowers and fruits. Fruits were evolving to get tastier for primates to eat and as primates ate them they spread them around as well. As they ate these new evolved fruits and flowers this invited changes onto their bodies as
Dr. Goodall is a well-known British primatologist who has discovered a substantial amount about primates in her many years of research. She has written numerous books, including one that we will be going into depth about called, “Through a Window.” Her book contains personal experiences, research findings, and even pictures to help the readers visualize her scientific breaking moments from her thirty years with the chimpanzees of Gombe. She states that there is are minor differences, and several similarities between humans and the chimpanzees. We will discuss these differences and similarities through their social behavior, intellectual ability, and emotions. To conclude, examine Goodall’s research to adopt what her findings can tell us about our early ancestors, and whether or not her study coincided to the steps of scientific methodology.
In Charles Darwin’s life he had helped make a significant advancement in the way mankind viewed the world. With his observations, he played a part in shifting the model of evolution into his peers’ minds. Darwin’s theory on natural selection impacted the areas of science and religion because it questioned and challenged the Bible; and anything that challenged the Bible in Darwin’s era was sure to create contention with the church. Members of the Church took offense to Darwin’s Origins of Species because it unswervingly contradicted the teachings of the book of Genesis in the Bible. (Zhao, 2009) Natural selection changed the way people thought. Where the Bible teaches that “all organisms have been in an unchanging state since the great flood, and that everything twas molded in God’s will.” (Zhao, 2009) Darwin’s geological journey to the Galapagos Islands is where he was first able to get the observations he needed to prove how various species change over t...
This article, titled Common Ground, written by Barbara Smuts, points out the main differences between humans and apes, such as our upright stance, large brains, and capacity for spoken language and abstract reasoning. However, the main point of this article is to emphasize the many similarities that apes share with us. Smuts goes into great detail about how human social and emotional tendencies are very reflective in the family of apes.
Chimpanzees make tools and use them to procure foods and for social exhibitions; they have refined hunting tactics requiring collaboration, influence and rank; they are status cognizant, calculating and capable of trickery; they can learn to use symbols and understand facets of human language including some interpersonal composition, concepts of number and numerical sequence and they are proficient in spontaneous preparation for a future state or event.
They have wide chests and their arms are longer than their legs. Chimpanzees’ hands have four long fingers plus an opposable thumb. Their feet have five toes which includes an opposable big toe. Chimpanzees’ can grasp things with both their hands and their feet. Male chimpanzees are larger than female chimpanzees and are slightly sexually dimorphic. Chimpanzees are quadrupeds that typically walk using the soles of feet and the knuckles of their hands. They sometimes walk upright only when they need to use their arms to carry things but this is a rare occurrence. Chimps are also good at brachiating and climbing trees which is where they spend most of their time even when they sleep. Their dental formula is 2.1.2.3. Chimpanzees’ have y5/x4 molars, making them frugivores, and a diastema to fit their upper canines. Their diet includes fruit, leaves, flowers, seeds, smaller mammals, birds, insects, and grubs. When chimps aren’t resting, they can be very active. I enjoyed watching the Chimpanzees’ swing on the ropes and climb up and down the trees. Chimpanzees are
Charles Darwin, the Father of Evolution, was a British scientist who laid the foundations of the theory of evolution, transforming the thinking of the entire world about the living things around us (Charles Darwin (1809 – 1882)). After working on his theory for nearly 20 years, he published On the Origin of Species by Means of Natural Selection in 1859. As soon as the book was released, the controversy began with each sides gaining followers until the climax on July 10, 1925. The idea that animals could “evolve” and change into new species, including humans, was one that challenged not only how people thought about the natural world, but challenged the story of the creation from the Bible itself. Even though Darwin himself never said that humans “evolved” from apes, everyone took it as a logical extension of his new theory. It went against the idea of argument for design that had unified theology and science for decades (Moran 5). This new threat to Christianity and the social culture of the time was one that would transform state laws on their educational curriculum.
Our earliest ancestors are primates. They are our closest relatives which is why we can see our behavior’s and practices in them. If we observe them we can get a better understanding of them and us, human beings. But unfortunately we all don’t get the chance to see a Primate right in our backdoor. So the best thing I could do for my observation was to visit them at the zoo.
Australopithecus afarensis existed between 3.9 and 3.0 million years ago. The distinctive characteristics of A. afarensis were: a low forehead, a bony ridge over the eyes, a flat nose, no chin, more humanlike teeth, pelvis and leg bones resembled those of modern man. Females were smaller than males. Their sexual dimorphism was males:females; 1.5. A. afarensis was not as sexually dimorphic as gorillas, but more sexually dimorphic than humans or chimpanzees. A lot of scientists think that Australopithecus afarensis was partially adapted to climbing the trees, because the fingers and toe bones of the species were curved and longer than the ones of the modern human.
The video, “What Darwin Never Knew”, is a stunning time line that details the theory of evolution formed by Charles Darwin, and the recent advancements made that answers some of the questions he simply could not. Darwin 's theory explained why today there are 9,000 kinds of birds, 350,000 kinds of beetles, 28,000 kinds of fish, and at least 2 million kinds of living species and counting. Darwin figured out that all species are connected, and he also realized that species evolved and adapted, but he did not know how.
Non human primates’ social organization can provide useful information how human social evolution occurs. We will go over main points of how similar and different non human primates such as chimpanzees, orangutans, and gorillas’ society are compared to ours, humans.
Anyone with even a moderate background in science has heard of Charles Darwin and his theory of evolution. Since the publishing of his book On the Origin of Species by Means of Natural Selection in 1859, Darwin’s ideas have been debated by everyone from scientists to theologians to ordinary lay-people. Today, though there is still severe opposition, evolution is regarded as fact by most of the scientific community and Darwin’s book remains one of the most influential ever written.
Apes, gibbons, monkeys, tarsiers, lemurs, and lorises make up the diverse and beautiful world of primates. We humans are primates, and there are more 300 species of primates in the world. The smallest primate is the pygmy mouse lemur, which can fit in the palm of your hand. The largest—the gorilla—can weigh more than 400 pounds. Almost every primate species is endangered, and the overhunting and forest devastation has brought some species to within a few dozen heads of final extinction.
Charles Darwin also showed how new species were created on the acts of evolution. It is easily explained by having big differences from the effect of natural selection, which were considered to be new species. So back in the beginning, before the effects of evolution had occurred there was just one specie, which evolved to make the species that we know today. So somehow all species are somewhat connected. The basis of what Darwin was proving was that life on Earth is simply the result of billions of years of adaptation to the changing environments. That is why certain species can only live in certain climates. This can be explained with the color of your skin, or the growing of plants.
Evolution views life to be a process by which organisms diversified from earlier forms, whereas creation illustrates that life was created by a supernatural being. Creation and evolution both agree on the existence of microevolution and the resemblance of apes and humans but vary in terms of interpreting the origins of the life from a historical standpoint. A concept known as Faith Vs Fact comprehensively summarizes the tone of this debate, which leads to the question of how life began. While creation represents a religious understanding of life, evolution acknowledges a scientific interpretation of the origins of life. The theory is illustrated as the process by which organisms change species over time.