Viruses

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Last updated 7:20 AM on 7/5/26
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9 Terms

1
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Viruses are not ___

Cellular - they have no plasma membrane

2
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Viruses are not derived from _______

cells of other living organisms

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Viruses do have _____

DNA and RNA

4
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Virus phylogeny is difficult to resolve because

Viral genomes are tiny, which restricts analyses - Rapid mutation rate and evolution cloud evolutionary relationships -There are no known viral fossils - They are very diverse

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ssRNA Virus

Singe-stranded RNA

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Positive sense virus

Skips DNA part of central dogma - ready for translation right away

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Negative sense virus

Has to be copied into a complementary copy first before being translated

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Retrovirus

Integrate their RNA into the host DNA using a protein

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2 types of double stranded viruses

double stranded DNA and RNA