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6 Cards in this Set
- Front
- Back
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The egyptian priest with foot-drop deformity was believed to be what virus?
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Poliovirus
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What are the three theories of viral origin?
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(1) free-living organism (bacteria)
(2) host cell genome (3) self assembling molecules from complex polymers |
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Explain the viral origin theory (from bacteria)
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free living bacteria moves into cell, progressive loss of bacterial genetic info and functions, form virus
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Explain the viral origin theory (from host-cell genome)
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Host cell mRNA multiple self-replicates, becomes virus, virus enters cell. multiple self-splicing RNA (from self- replicating RNA derived from most cell mRNA)
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Explain the viral origin theory (from complex polymers)
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polynucelotides form self-replicating RNA, coevolution occured and self-replicating RNAs move into the cell, form virus genome.
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What is the flaw in the self assmbling molecules theory?
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Self-replicating RNAs somehow make RNA from the RNA template, which is impossible without a polymerase. Therefore this probably didn't happen in mammalian cells.
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