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BIO-Compare the embryos of chickens, humans and fish, and describe in detail how pharyngeal...




Question;1.;Compare the embryos of chickens, humans and fish, and describe in;detail how pharyngeal arches show a shared evolutionary past?;2.;Explain how reproductive barriers result in the development of;different species.;3.;Explain what is meant by the statement, evolution does not have a;goal.;4.;Explain why you would or would not expect evolution to proceed;more quickly in a rapidly changing environment. Be sure to address all five;agents of evolutionary change in your response.;5.;Explain why penicillin, once a widely used and effective;antibiotic, is now no longer effective against penicillin-resistant bacteria.;6. We all know that bacteria are capable of;causing serious illnesses. Research has now shown that bacteria are helpful in;many more ways than had previously been known. How is your life influenced by;helpful bacteria?;7.;Present your view of the early conditions on earth that might;have affected the traits of organisms living in that environment and how life;may have formed. Explain how extremophiles represent examples of those;organisms.;8.;Viruses;prions and viroids are non-living organisms that require a living cellular host;in order to reproduce. They cannot do it on their own. These parasites may be;just a string of RNA, as in a viroid, or a length of DNA enclosed in a protein;shell, as in a virus.Is it;possible that these parasites may be links to the earliest days of the;beginning of life on this planet?;Post your primary;response and support your statements with references.;Your primary post should be at least 125;words or so. Be sure to cite your;references in American Psychological Association (APA) style in-text and;include the full APA style reference information at the end of the document.


Paper#62498 | Written in 18-Jul-2015

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