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Human beings and Chimpanzees (possible interbreeding) (Essay Sample)
I need a paper written on these 3 discussion. Please keep them separate. DO not only tell what you like, dislike, agree, or disagree, but make sure you understand the biology involved and that you are adding to the discussion. Discussion: Discussion 1: A study suggests ancestors of two species interbred to create fertile hybrids. The conclusions comes from an analysis involving genomes of humans,chimps,gorillas, and monkeys. The last common ancestor between man and chimp split into separate species. The study proposed how we separated from our closest relatives the chimpanzees. " The study found that an original split was probably followed by a phase of interbreeding and hybridization, possibly with fertile female hybrids crossbreeding with male chimps, before the final split occurred" (Man,2006). www(dot)independent(dot)co(dot)uk/news/science Discussion 2: There is much evidence that points to the probability that early humans and chimpanzees might have interbred at some point in our early history. It is suggested that ancestors of the two species interbred at some point in the distant past to form fertile hybrids. It is well established that chimpanzees are the closest living relative of humans but this is the first time that scientists have found evidence for hybridization through interbreeding. It was concluded that this research comes from an in depth analysis of the genomes of humans, chimps, gorillas and monkeys. The researchers were especially interested in the point at which the process of the separation of species that gave rise to the chimp and human lineages. This study however gave unexpected results about how we are separated from our closest relatives, the chimps. Next, a comparison of the entire DNA of chimps and humans suggests that they split apart no more than 6.3 million years ago. The study found that an original split was probably followed by a phase of interbreeding and hybridization, possibly with fertile female hybrids cross-breeding with male chimps, before the final split occurred. Researchers lastly looked at the variation in evolutionary history across the genomes of humans and chimps. They found that the time of full divergence between the two species ranges over four million years. Specifically, the study found that the X chromosome is the youngest part of the genome and was still being modified just before the final split occurred. Therefore, it was finally concluded that "A hybridization event between human and chimpanzee ancestors could help to explain both the wide range of divergence times seen across our genomes as well as their relatively similar X chromosomes.” http://www(dot)pearsonhighered(dot)com/samplechapter/0205683290.pdf http://www(dot)independent(dot)co(dot)uk/news/science/early-humans-and-chimps-may-have-interbred-to-create-hybrid-man-478663.html http://naturalselection(dot)0catch(dot)com/Files/Early%20Man.html http://www(dot)livescience(dot)com/783-human-chimp-ancestors-interbred.html Discussion 3: Darwin's natural selection theory led to the idea that humans may have evolved from apes. Further research and more advanced technology have shown that that may not be exactly true, but it has been shown that humans and chimpanzees might have interbred at some point in our early history. It was found in 2006, that genetic research suggested that after the last known ancestor of humans and chimpanzees, which lived between 5 and 7 million years ago, there was interbreeding between the human and chimpanzees linages for 1.2 million years. This is thought because of the similarities in linages and living geographies (“Could Chimps and Humans Interbreed?”). It has been found that humans and chimpanzees are closely related, sharing 95% of their DNA sequence and 99% of their coding DNA sequences (Hecht). Another study showed another similarity of humans and chimpanzees, the X-chromosome. Comparisons of the human and chimpanzee genomes suggests interbreeding. Findings show that the X-chromosome may have diverged about 1.2 million years more recently than the other chromosomes. This led to the discovery that there were two splits between humans and chimpanzees (Wade). It is felt that while there is some research that does show discontinuation with some of the evidence found to support the interbreeding of humans and chimpanzees, that it is still very possible for the interbreeding of the two. As more research is done and new technologies are found, it will become more evident of what ancestry and hybrids were or were not formed. "Could Chimps and Humans Interbreed? | 22 Words." Could Chimps and Humans Interbreed. N.d. Could Chimps and Humans Interbreed. 22 Words, 15 July 2013. Web. 23 Oct. 2013. <http://twentytwowords(dot)com/2013/07/15/could-chimps-and-humans-interbreed/>. Hecht, Jeff. "Chimps Are Human, Gene Study Implies." Chimps Are Humans, Gene Study Implies. New Scientist, 19 May 2003. Web. 23 Oct. 2013. <http://www(dot)newscientist(dot)com/article/dn3744>. Wade, Nicholas. "Two Splits Between Human and Chimp Lines Suggested." New York Times (18 May 2006): n. pag. Two Splits Between Human and Chimp Lines Suggested. New York Times, 18 May 2006. Web. 23 Oct. 2013. <http://www(dot)nytimes(dot)com/2006/05/18/science/18evolve.html?ex=1171515600&en=50ac61aa1c998951&ei=5070&_r=0>. source..
Human Beings and Chimpanzees
According to the recent study by (Man. 2006) the hominids that came much earlier than the human race may have been interbreeding with the cousin chimps, after a split that resulted in the separation of the humans and the chimpanzees. The interbreeding of the two species may then have led to the hybrids which then led to the hybrids crossbreeding even further with the fertile females. This controversial proposal came after comparing the genomes of the humans, the chimpanzees, monkeys and gorillas, bring to the conclusion that the split between the humans and the chimpanzees may have happened much more recent than most other research reports suggest and the fossi...
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