Multiple choice

Phylogenetically which of the following viruses is more closely related to HIV-2?

  1. HIV-1 of chimpanzees

  2. Simian immunodeficiency virus ( SIV ) of sooty mangabeys.

  3. SIV of sykes

  4. SIV of African green monkeys
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B Correct answer
Explanation

Simian immunodeficiency virus of sooty mangabeys (SIVsmm) is identified as the progenitor of human immunodeficiency virus type 2 (HIV-2) and has been transmitted to humans on multiple occasions. Even  then the epidemiology and genetic diversity of SIVsmm infection is unknown.

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