Figure 1.22 Evolutionary trees for a chain of HIV trans- mission (a) As HIV move

Question

Figure 1.22 Evolutionary trees for a chain of HIV trans- mission (a) As HIV moves from host to host, it diversifies inside each patient. (b) In the evolution- ary tree for the entire chain, the tree for the last link arises as a branch within the tree for the middle link, which in turn arises as a branch within the first link (c) For most transmission chains, we are likely to have access to only one or a few virions from each host. (d) Nonetheless, in a tree estimated from the available samples, consecutive links in the chain will appear as closest rela- tives on the tree Patient 1 Patient 2 Patient 3

Explanation / Answer

iv) Statement is true only one variant is isolated from each patient but the consecutive links are represented accurately

E) Statement E conveys accurate information, since the other statements i, ii, iii are not correct part b is not presenting branching diagram for virus population of patient 1. Similarly statement ii and iii are not presenting branching diagram of patient 2 and 3 as mentioned in the statements.

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