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Refer to the Figure Showing a Phylogenetic Tree of Immunodeficiency

Question 68

Multiple Choice

Refer to the figure showing a phylogenetic tree of immunodeficiency viruses. Refer to the figure showing a phylogenetic tree of immunodeficiency viruses. Based on the figure, which statement is false? A) HIV viruses evolved from simian immunodeficiency virus (SIV) . B) HIV-1 and HIV-2 are more closely related to each other than to any of the simian immunodeficiency viruses. C) There are two different HIV strains. D) SIVcpz could be considered an outgroup for the clade of SIV that is found in sun-tailed and African green monkeys. E) SIVsm and HIV-2 are sister clades. Based on the figure, which statement is false?


A) HIV viruses evolved from simian immunodeficiency virus (SIV) .
B) HIV-1 and HIV-2 are more closely related to each other than to any of the simian immunodeficiency viruses.
C) There are two different HIV strains.
D) SIVcpz could be considered an outgroup for the clade of SIV that is found in sun-tailed and African green monkeys.
E) SIVsm and HIV-2 are sister clades.

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