Many virologists note that viruses which have a genome made up of RNA will tend to evolve faster than those viruses whose genome is made up of double-stranded DNA. Most evolutionary biologists now accept that RNA was the first nucleic acid molecule to evolve to store information. Why is this early “RNA world” more likely when you consider how RNA polymerases (such as primase) and DNA polymerases start replicating nucleotide chains?

Human Anatomy & Physiology (11th Edition)
11th Edition
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Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Many virologists note that viruses which have a genome made up of RNA will tend to evolve faster than those viruses whose genome is made up of double-stranded DNA.

Most evolutionary biologists now accept that RNA was the first nucleic acid molecule to evolve to store information. Why is this early “RNA world” more likely when you consider how RNA polymerases (such as primase) and DNA polymerases start replicating nucleotide chains?

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