What are Viruses? Origins of Viruses Viruses have likely existed since the earliest life forms and have evolved alongside cellular organisms. Due to their lack of fossil records, the origins of viruses remain unclear, and scientists use molecular biology techniques to explore their evolutionary history. Three primary hypotheses attempt to explain how viruses may have … Read more
Viroids Definition Viroids Structure: Replication of Viroids or Infection of Viroids Viroid RNA replicates autonomously and spreads within the host by recruiting host proteins. There are three enzymes that help in RNA replication such as RNA pol. II, RNAase and RNA ligase. Viroid RNA don’t code for any plant protein and they lack AUG initiation … Read more
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