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Boulder Q: Evolutionarily speaking, do cowpox and smallpox have a recent common ancestor?

April 26, 2017ancestor Boulder common cowpox evolutionarily recent smallpox Speaking

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Boulder Q: Evolutionarily speaking, do cowpox and smallpox have a recent common ancestor?

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There is enough genetic sequence difference to suggest that the separation was not very recent. Cowpox is, curiously, a rat virus; both the cow and the human are incidental hosts.