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Explain the evolution of viruses

One of the first most popular hypothesis is that viruses originated from naked bits of cells nucleic acid, which moves from one cell to another, perhaps via injured or damaged cells



Second hypothesis is that viruses are made from remanants of cellular organism



Thirdly virruses predated and coevolved with thei lr cellular host

What are plasmids and transposons


Circular DNA molecules found in bacteria and in unicellular eukaryotes called yeast, can replicate independently of genome and are occassionally transfered between cells.


DNA segments that can move from one location to another within a cell's genome



Mobile genrtic elements

Relates to the first hypothesis of how viruses evolved

DNA --> DNA

Replication

DNA-->RNA

Transcribed

RNA-->protein

Translation

Which virus has a membranous envelope, or aka viral envelope

Influenza viruse