Summary Of Why Are Cimps Still Chimps

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In the article “Why Are Chimps Still Chimps?” published on February of 2012 by authors Norman J. Johnson, James J. Smith, Briana Pobiner, and Caitlin Schrein write about chimps and why they are still around today. Many people ask the question, if we evolved from chimps then why are they still here? The authors purpose of this article is to answer that very question. They write that the reasons chimps are still around today is because humans did not evolve from living chimps. Instead, both human and chimps evolved from a common ancestor that is now extinct. The authors quickly go into making their first point by discussing two evolutionary patterns. They are called anagenesis and cladogenesis. Anagenesis is a single lineage and cladogenesis …show more content…

Overall, chimps have a smaller brain size, humans have greater intellectual abilities, and the bodies between chimps and humans are different. However, despite these differences, chimps and humans have similar chromosome patterns. According to the authors, “...chimp and human chromosomes can be paired up such that each human chromosome has a corresponding chimp chromosome.” Humans and chimps also have a similar nucleotide pattern in their DNA. The authors then go on to discuss the changes that occurred along the human and chimp lineage and they came up with three separate scenarios. The first scenario is that humans have evolved more since the split. The second scenario is that more evolutionary change has taken place in the chimp lineage and the third scenario is that the amount of evolutionary change between humans and chimps has actually been equal since the split. It is believed that human and chimps immune systems and reproductive functions were evolutionary changes that took place in order for them to …show more content…

In chapter 3 of our book, we learn about the biological basis of life which is all about cells, DNA, genes, etc. This works really well with the article because the authors talk a lot about DNA, chromosomes and genes. We also learn about cell division in chapter 3 of our book. By reading about this process before reading the article, we are able to understand what the authors are talking about with all of their technical terms. By understanding our biology, we may be able to comprehend what the authors are trying to say. In chapter 4 of our textbook, we learn about heredity and evolution. This also went hand in hand with the article because the authors discuss evolution. The textbook explains heredity and evolution very well. It talks about traits and some offspring can receive traits that don’t appear similar to their parents. The textbook also talks about the modern evolution theory and how it is a two-stage process. By understanding evolution it makes the article easier to read. The authors of the article do an excellent job of explaining evolution which I mentioned earlier. Overall, it is clear that the weekly readings really help before reading the article because it just explains things a little more that the authors didn’t mention or go into detail

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