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Neanderthal man and evolution
Neanderthal man and evolution
Abstract for research paper for homo neanderthalensis
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For many years, and still even to this day people view Neanderthals as dumb brutes, who knew nothing. People assume that this is why Neanderthals went extinct. When a person is asked to describe a Neanderthal one might say that they are ape-like, dirty, dumb, cannibals, and walk around with a club killing others. Some of these things are true, but some of them are not. So, how closely related are we to Neanderthals?
According to European fossil records, Neanderthals appeared about 400,000 years ago and they evolved and then disappeared around 30,000 years ago. Neanderthals lived in Europe and Western Asia as far east as Southern Siberia and as far south as the Middle East. During this time, it is suggested that Neanderthals came into contact with anatomically modern humans. There is a lot of controversy over whether or not they actually interbred. Morphological features of present-day humans and anatomically modern human’s fossils have been the evidence that is for and against a genetic exchange between Neanderthals and the ancestors of present-day humans. DNA sequence data from present-day humans is also evidence that Neanderthals have made a genetic contribution to present-day humans (Green 1).
Detecting signals of gene flow between Neanderthals and modern human ancestors can be challenging because the two groups share a common ancestor within the last 500,000 years. This is not any more concrete than the nuclear DNA sequence variation of present-day humans. The article goes on to say that Neanderthals share more genetic variants with present-days humans in Eurasia than with present day humans in sub-Saharan Africa (Green 1). This article is very scientific and dense. It becomes extremely hard to understand when it starts talk...
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...ng. There are also “old-earth creationists” who accept that the earth is old, but reject evolution by nature and non-divine means. They believe that Neanderthals were animals not humans. Paabo was surprised that his finding were reaching a much broader audience (Matzke 1). Clearly, Matzke wanted to post this blog to help get himself out there. He wanted to show that he was capable of aiding in a scientific discussion.
This blog shows how there is always going to be two sides to every story. Many, many tests have been done that show evidence of interbreeding. Whether some people like it or not, a small portion of our population has trace amounts of Neanderthal DNA. From the models that scientists have come up with, we look a lot different from Neanderthals, but just because we may not look the same on the outside, doesn’t mean that don’t have some things in common.
Over the last few hundred years, more and more has been added to the world’s fossil collection, fossils from all over the world. New theories have been created and old theories have almost been proven about the evolution of man. For example, we have proof that different species of man existed with certain types of DNA sequences and instincts, some we may not have anymore, or some that other species did not have back then. Even though it is subjected to much debate, one of the most widely accepted theories however, is that Homo sapiens interbred with the slightly more primitive species of man, the Neanderthal.
Wilford, J. (2004).Another Branch of Early Human Ancestors Is Reported by Scientists. [Online], March. Available at: http://gateway.proquest.com [Accessed 28 March 2004].
Around 1.8 million years ago, two hominids were born, first the Homo Erectus and then the Neanderthals. Although the two very different humans. However, were they that different? Our ancestors were very versatile hominids. They lived in various places and lived in a variety of ways. The Homo Erectus and Neanderthals were all special in their ways. They had similarities and differences that set them apart. They had similarities, but in the same way, their differences helped them survive if they had not adapted to how they lived they would have lasted the same time that their ancestors have lived. The Neanderthals lived for an average lifespan 30 years. They had to have some mistake that decreased their lifespan because if the Homo Erectus had done the same, there’s a chance that we might not be here now. Their differences set the future that we live in today. These
The human archaeological record is a long and undefined story that may be the most complex question researched today. One of the big questions in human history is the disappearance of the Neanderthal people from the archaeological record around 30,000 BP. While for thousands of years Neanderthals and Anatomically modern humans crossed paths and perhaps lived in close relations, we have yet to really understand the degree to which they lived together. My hypothesis is that these two hominids, Neanderthals and Anatomically Modern Humans, interbred exchanging genes after Modern Humans dispersed from Africa and creating like cultures and material remains. The differences between Neanderthal and Modern humans are not only physical but also genetically evolved and this research will determine an estimated amount of admixture between the two groups.
Australopithecus afarensis who existed 3.5 million years ago and a 4.4 million year old skeleton of an Ardipithecus ramidus are the closest science has come to discovering the human lineage. Shattered Ancestry an article written by Katherine Harmon discusses the remains of two hominids found within Ethiopia. These skeletal remains have created a huge controversy within the topic of evolution questioning many assumptions that have been made referencing the human lineage. The skeleton of the Australopithecus afarensis was named Lucy and was discovered in 1974. The evidence of her walking upright on her two feet essentially guaranteed her a spot in the human lineage line. Lucy was a chimplike ape that was said to walk upright making scientists believe the human ancestry was simple. The complete skeleton found in Ethiopia of an Ardipithecus ramidus named Ardi completely changed all assumptions made from scientists about the complexity of the human lineage. These remains have encouraged researches that the human line is not the only lineage to have evolved but the chimpanzee line has undergone drastic changes as well. There are many traits that researchers have always directly linked to the human lineage however since these discoveries occurred researchers are reconsidering. The recent discoveries that have shattered what has always suggested what linked a species to the human lineage have changed the certainty of whether it is possible to confidently identify the human’s last common ancestor. Majority of scientist had forgotten that there would have been many hominid species living together at one time. New theories have been suggested since scientists revealed that the foot of a hominid found called the Burtele site was found ju...
The first Neanderthal fossils found in Europe, a fragmented child’s cranium in Belgium in 1830, and an adult cranium in Gibraltar, were not immediately recognized as a divergent kind of human. Only in 1856 after a partial skeleton was found in a cave in the Neander Valley in Germany it became clear that these fossils belonged to an extinct human and our closest evolutionary relative (Hublin and Pääbo, 2006). Since then, questions about their relationship with modern humans have been fiercely debated between anthropologists. But what attracts most interest from scientists and popular media is the possibility of hybridization between Neanderthals and modern humans if, in other words, they were a genetically different specie or a single specie capable of producing offspring.
Mitochondrial DNA has a lot of characteristics and features which makes its use very essential in determining the spread of humans throughout the world. Human mitochondrial DNA is solely inherited from mothers. A human’s mitochondrial DNA is the same as his mother’s mitochondrial DNA, which is the same as her mother’s mitochondrial DNA. Researchers can estimate a probability distribution of ancestors’ genes and migration paths through time if they are given a set of mitochondrial gene sequences. It is assumed that all mitochondrial DNA types in the human gene pool can ultimately be traced back to a common matrilineal ancestor that lived approximately 200,000 years ago in Africa.(Oven et al, 386) All human mitochondrial DNA can be traced back to a single mitochondrial DNA known as “mitochondrial Eve”, who lived in Africa a long time ago. Mutations are m...
Do non-human primates have communication, language, both, or neither? By definition, communication is the imparting or interchange of thoughts, opinions, or information (Snowdon). Communication is very closely related to social behavior since they are both referring to the ways animals interact with each other (Quiatt and Reynolds 1993). Conversely, language is defined as a system of communication using sounds or gestures that are put together in meaningful ways according to a set of rules (Haviland et al. 2010). Non-human primates and human primates are similar in many ways, and communication is no exception. They both have various types of communication senses and styles. Human primate communication senses consist of sight, smell, taste, hearing, and touch. Non-human primates mainly understand the world through sight, but smell, taste, and hearing are important as well (Quiatt and Reynolds 1993). Human primates are capable of speaking a language, while non-human primates use different vocal calls to communicate. In essence, the difference is simple, human primates have language while non-human primates do not. Even though non-human primates do not have language, they do have communication.
In recent years, the Homo Neanderthalensis were viewed as “subhuman brutes”, but are now seen as a different species from our own (Balter 2001). The Neanderthals were a branch of the Homo genus that evolved in Eurasia at least 200,000 years ago (Fagan 2010). The first Neand...
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.
For centuries Homo sapiens have been considered the most unique species in the primate order. Researchers have shown that Homo sapiens are not the most unique in the homo genus, there have been ancestors that have the same traits that many people consider unique to human. One of these traits is the ability to walk bipedal, which no other primate can do well. It is difficult to state which of the ancestors were the first “humans”, but through various evidence, it can be determined that the Homo neanderthalensis or Neanderthal, were the first to show signs of being human.
From the ancient bones of the Neanderthals, scientists have been able to extract small amounts of DNA. The DNA comparisons to modern humans show no relationship, implying evolutionary separation (Kunzig, 159). Some anthropologists say the small sections of DNA found are not conclusive evidence, because modern humans show just as much variation in DNA. These people point out that individuals such as the “Portugal Kid” are hybrids of Neanderthals and modern humans, showing there was gene trading. One argument against this is that there is no skull from the ‘Portugal Kid” so it is hard to compare it to Neanderthals. Also, it is known that closely related species can breed and their offspring can be fertile, but they are still separate species (Kunzig, 161).
Scientists thought that interbreeding would be a logical assumption to the Neanderthal conundrum. Unfortunately, any evidence of DNA from Neanderthals mixed with human DNA is difficult to come by because their fossils are usually tarnished upon finding. That is until Svante Paabo, and his research team from the Max Planck Institute for Evolutionary Anthropology, came across the remains of twenty-four Neanderthals and forty early humans.* All of these fossils were nearly 40,000 years old and were from Germany, Russia, and Croatia. Nine of these fossils (four Neanderthal and five human)
Modern-day genetic technology has granted mankind with the opportunity to bring back extinct species from the dead. If humans have come to possess the DNA from an extinct animal population, it is possible to create an identical clone of the animal in question, effectively “bringing it back from the dead”. Many ethical dilemmas surround the practice of de-extinction, and rightfully so. Recreating an extinct species could produce groundbreaking scientific breakthroughs, generating exciting opportunities for future genetics-based research. However, there could also be monumental consequences: the newly revived, once-extinct species might destroy the ecological equilibrium of modern Earth
The topic for discussion, “We are One Species”, is a very apt and befitting one. Species may be varied and different kinds of organisms. We, as people, may look different, we may live in a diverse World, we may speak different languages, we may come from different backgrounds, race, culture, or customs, still inherently and intrinsically, we are the same or belong to one species.