As the teaching of the theory of evolution has been accepted into most public schools, a new controversy has arisen about whether or not the theory of creation should also be taught in public schools. The theory of evolution was first presented in 1859 by Charles Darwin and has influenced history as an alternative to the theory of creation. Evolution is simply change; it is a process that results in genetic changes in a population spread over many generations. The theory of evolution suggests that all the species that have ever existed descended from a single ancestor from the past. This theory claims that humans, through gradual continuous changes, have evolved from the ape family.
The evolution of man can be broken up into three basic stages. The first, lasting millions of years, slowly shaped human nature from Homo erectus to Home sapiens. Natural selection provided the means for countless random mutations resulting in the appearance of such human characteristics as hands and feet. The second stage, after the full development of the human body and mind, saw humans moving from wild foragers to an agriculture based society. Natural selection received a helping hand as man took advantage of random mutations in nature and bred more productive species of plants and animals.
Early humans are classified in ten different types of families. Creationists believe that humans were always humans. Humans are classified in the mammalian family Primates. In this arrangement, humans, along with our extinct close ancestors, and our nearest living relatives, the African apes, are sometimes placed together in the family Hominidae because of genetic similarities. Two-leg walking seems to be one of the earliest of the major hominine characteristics to have evolved.
It will be through the examination of human physical traits, human origins from pre-humans to modern humans, and major discoveries that we will be able to understand the history of human evolution. The Hominidae, or hominids are a group of upright walking primates with relatively large brains. The only existing representative of this family is the Homo sapiens. We can declare that all humans are part of the hominid family, yet not all hominids can be considered humans. However all humans are primates; although humans have developed very distinct traits from its genetically similar primate, the chimpanzees, such as bipedalism, meaning walking on two legs.
Origins of Early Hominins Humans know or understand the theory of evolution and how they evolved from apes, but there is always talk of a missing link between apes and modern humans. Apes did not just suddenly evolve into modern day humans. Apes evolved into another species that fall into the relation of modern humans. This is what the missing link is referring to; we call the species hominins. Hominins comprised of many species actually, including but not limited to, Australopithecus afarensis and Homo erectus.
Evolution means change over time. Human evolution is the process by which humans have emerged from apelike ancestors. Through sequences of mutations, genetic drift, migration, and natural selection and technology we are able to observe the amazing amount of similarities and diversity of humans to other living organisms. Humans have roamed the earth for about six million years. At least, that is from when the oldest human ancestor was discovered.
Homo Aquaticus? I. Introduction When the human brain is compared with the brains of apes there are several obvious differences; the centers for the sense of smell and foot control are larger in apes than in humans, but the centers for hand control, airway control, vocalization, language and thought are larger in humans. In my paper, I will describe the most defined differences of brain size and centers between humans and their closest relatives, chimpanzees, to compare them with other mammals and to draw conclusions about the evolution history of humans. II.
Buffon also published Les Epoques de la Nature(1788) where he suggests that the planet is much older than the 6,000 years the church had previously said (berkeley.edu./history/buffon). Jean Baptiste ... ... middle of paper ... ...k their ideas and was able to find a theory that worked. There are so many more scientists who contributed to the idea of evolution, but I feel like these three were important. Buffon realized a connection between humans and apes. Lamarck had the idea of heredity, and Malthus was a major influence in Darwin's breakthrough in evolution.
As soon as the size of the brain increased, stone tools appeared. Homo erectus was the first to leave Africa, hunt, make fire, and create societies. Homo erectus lived 1.3 million years ago in the Great Rift Valley. Homo erectus evolved to have thinner arms, longer legs, and bigger brains. This is considered to be a huge evolutionary step away from ape bodies, to more human bodies.
For many years researchers have been finding new species. These species have been named Australopithicus, robust australopithecines , Orrorin tugenensis, Homo habilis, Homo erectus, neanderthal, and Homo sapiens. These early hominids and modern humans really show off how the features and behaviors have really changed in time. Austalopithicus meaning “southern ape” was the first specimen to be found. The Austalopithicus was found in African and was know to have lived from 4.2 to around 1.0 million years ago (Standford 251).