The population of HIV variants in a person's body changes during the course of infection due to

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Natural selection is the process by which organisms with traits that are better suited to their environment are more likely to survive and reproduce, passing on their traits to their offspring. In the case of HIV, the population of variants in a person's body changes during the course of infection due to natural selection, as variants that are better able to evade the immune system are more likely to survive and replicate.

The Population of HIV Variants in a Person's Body Changes