Nobody downloaded yet

Opinion - Article Example

Comments (0) Cite this document
Date: Abstract Today, the origin of modern man is explained by two different hypotheses- the multiregional and the out-of-Africa hypothesis. Scientists have discovered numerous fossils of human ancestors the traits of which are partially similar and sometimes very similar to that of the modern day man…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER96.7% of users find it useful
Opinion Article
Read TextPreview

Extract of sample

Download file to see previous pages Genetic analysis using the most modern methodologies alone can help recreate the ancestral relation of modern man to each of its ancestors and help track down the origin of man. Introduction Based on the study of fossils by paleoanthropologists, it was established that Homo Erectus was present in East Africa nearly 2 million years ago (Pic1). Homo Erectus is known to have large cranial capacity and was conversant with hunting however was still unfamiliar with methods of building or agriculture. Most scientists believe that Homo Erectus moved out of Africa where they slowly developed into Neanderthals and other homo erectus groups. Out of the two proposed hypotheses for the origin of man, the out-of-Africa hypothesis, though debated upon, is largely supported with fossil evidences and genetic analysis. According to the article selected, genetic analysis of homo sapiens or the modern man shows that Homo sapiens descended from Homo erectus in Africa nearly 200,00 years ago. Post this, Homo sapiens moved out of Africa to different places such as Asia, Europe and later to Australia and America. Thus, gradually Homo Sapiens are said to have replaced all the Homo Erectus according to the out-of-Africa theory. One of the most important evidences to support this is mt DNA analysis of African and non-African populations. Mitochondrial analysis clearly reveals that the mt DNA (mitochondrial Dna), which is the DNA extracted from mitochondria, sequence diversity is greater among Africans than that of non-Africans thereby establishing the point that the ancestors of Homo Sapience must have had diverged in the African region. DNA sequences obtained from Y-chromosome or mitochondria support the fact that the roots of the modern man are based in east Africa. DNA analysis also establishes that large scale migration of Homo sapiens occurred out of the East African region to Ethiopia, Eurasia, Asia etc More advanced genetic analytic studies like that of single nucleotide polymorphism (SNP) or microsatellite study also supports the fact that the modern man originated in Africa and then spread to other parts of the world.However, there are several unanswered questions regarding this migration and the out-of-Africa hypothesis. BODY 1. Mark Stoneking and Johannes Kruase compared the DNA sequence of Neanderthal to that of modern day mani. The mt DNA of the Neanderthals differed vastly from that of Homo sapiens. Newer studies suggest admixture i.e. interbreeding of species where genetic material exchanges are seen. The out-of-Africa theory was tested according to which “a single dispersal from Africa followed by separate migrations from this ancestral non-African source population, and this scenario receives the strongest support from the data (P = 0.74)” (Stoneking & Kruase). I feel that the previous out-of-Africa theory needs to be modified since genome analysis provides a direct relationship according to which it is seen that Neanderthals and Denisovan genomes diverged from hominin genome. After this the sister groups i.e. Neanderthal and Denisovan diverged and migrated as admixtures while the rest of the hominins in Africa gradually became the modern man. Therefore, the prior belief that Homo sapiens evolved entirely in Africa before migrating to other places is modified into the fact that hominins diverged into groups which interbred and this admixture migrated to other places ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“Opinion Article Example | Topics and Well Written Essays - 1500 words”, n.d.)
Opinion Article Example | Topics and Well Written Essays - 1500 words. Retrieved from https://studentshare.org/biology/1487500-opinion-article
(Opinion Article Example | Topics and Well Written Essays - 1500 Words)
Opinion Article Example | Topics and Well Written Essays - 1500 Words. https://studentshare.org/biology/1487500-opinion-article.
“Opinion Article Example | Topics and Well Written Essays - 1500 Words”, n.d. https://studentshare.org/biology/1487500-opinion-article.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
Article newspaper
Ian Barrie is the one among the only two living Shihans in Britain. The award Shihan is equivalent to a sixth Dan black belt. Shihan is an award consisting of a red and white belt. It is presented in a peculiar manner. Both the award presenter and the receiver sit on their knees while presenting this ward.
2 Pages(500 words)Article
Article Review
According to the researchers, the token or we can say ticket system having some cash value play an important role to reinforce children who are facing some problems in reading or any other activity. Therefore, the research
3 Pages(750 words)Article
ge newspaper, talks about how religion should not be able to have any kind of affect on the legalization or the making illegal of various things in the United States of America. This is because, according to the writer of this article, the US Constitution and political ideology
3 Pages(750 words)Article
A Journal opinion article and address an economic issue of current interest to Wall Street Journal readers
The countries were however to reduces their spending by carrying out stringent austerity measures to cut government spending. Several countries such as
3 Pages(750 words)Article
Article critique
cusses the parents’ role in providing their children with the basic knowledge of sex education; it argues that should parents discuss the early sex knowledge with their children or not? The article discusses that how parents can play their role in providing awareness to their
2 Pages(500 words)Article
Culture and Business
Culture defines the development of relationships between suppliers and customers as well the development of a marketing plan and objectives. The culture of the countries differs significantly
1 Pages(250 words)Article
Article review
This study has been summarized by the editors of Science Daily in the article “Is athleticism linked to brain size? Exercise-loving mice have larger
2 Pages(500 words)Article
The article begins by grouping people into two. This was a very good strategy incorporated by the writer because grouping is very critical in the success of passing on certain information to people. The reason is people vary in opinion and
2 Pages(500 words)Article
Article Review
Who would have known that this method would be used in medicine to cure cancer! The article Combining Synthetic, Natural Toxins Could Disarm Cancer, Drug-Resistant Bacteria by Jade Boyd tells us exactly how war
2 Pages(500 words)Article
Article Critique
However, to maintain good health, what is important is to eat food that is full of nutritious value. This is because all the components of human body, its activities and its defense system against the diseases, is built with the help of nutrients that it gets from the food that is eaten (Whitney & Rolfes, 2011, p.2).
3 Pages(750 words)Article
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Let us find you another Article on topic Opinion Article for FREE!
logo footer
Contact us:
Contact Us Now
FREE Mobile Apps:
  • StudentShare App Store
  • StudentShare Google play
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • Miscellaneous
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us