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Figure 1 | BMC Evolutionary Biology

Figure 1

From: Selection dramatically reduces effective population size in HIV-1 infection

Figure 1

Illustration of the genetic model. A) In the absence of recombination, an offspring with allele a can be derived from a parent with allele a (without mutation) or a parent with allele A (with an A to a mutation); an offspring with allele A can be derived from a parent with allele A (without mutation) or a parent with allele a (with an a to A mutation). B) In the presence of recombination, an offspring with allele a at locus S can be derived from parent(s) in the previous generation by four pathways: 1) Locus S from a parent with allele a without mutation or recombination, (or with recombination between another parent with allele a). 2) Locus S from a parent with allele A following an A to a mutation but no recombination (or with recombination between another parent with allele A). 3) Locus S from a parent with allele a without mutation, but with recombination between another parent with allele A. 4) Locus S from a parent with allele A following an A to a mutation and recombination between another parent with allele a. An offspring with allele A can be derived from parent(s) in four pathways similar to those described above. For the purpose of illustration, only 8 genomes were presented in generation t-1 and t.

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