Selection within pathogen hosts typically favors ________; selection across hosts favors ________.

Name: Selection within pathogen hosts typically favors ________; selection across hosts favors ________.
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Question

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Selection within hosts often favors more virulent strains because these can outcompete other strains by exploiting the host more effectively. However, across hosts, less virulent strains are favored because they allow the host to survive longer, potentially spreading the pathogen to more hosts.

Selection Within Pathogen Hosts Typically Favors ________; Selection Across Hosts