Viral Evolutionary Biology And Virology: The Origins Of Viruses

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Viral evolution is a part of evolutionary biology and virology. It covers the evolution of viruses and the bacteria that they evolve from. Part of viral evolution deals with the idea that RNA viruses mutate faster as a result of short generation time. The origin of viral evolution contains three main hypotheses regarding the origins of viruses. The first hypothesis states that small cells invade and become parasites to larger cells, thereby forming a virus. The second hypothesis states that small parts of our DNA and RNA escape from the genes of a large organism and start the evolution process. The final hypothesis states that viruses have evolved from complex molecules and nucleic acid prior to the formation of the first cells on Earth. Since none of these 3 hypotheses have been scientifically accepted, the origin of viruses has still not fully been determined. One of the biggest deterrents in studying the origin of viruses is the high rate of mutation. This makes finding a source difficult.

Viruses spread by …show more content…

They believe that the first carrier was a man named Gaetan Dugas. He was a homosexual man from Europe who spread the disease by frequenting gay bathhouses throughout the world. Dugas was a flight attendant who traveled around the world and was capable of thereby spreading the virus to other homosexual men. In a recent study conducted by the National Academy of Sciences of the United States by Michael Worobey and Dr. Arthur Pitchenik it has been claimed that the modern strains of HIV/AIDS in the United States moved from Africa to Hait. It is in Haiti where it is believed to have been brought over by a single immigrant in 1969. In 1969 the first death from a virus with HIV/AIDS symptoms, Robert Rayford in St. Louis was identified. Although he is not believed to have been "patient zero", it is believed that he was the first person to have died from HIV/AIDS in the United

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