From phylogenetic and other analyses, we now know that HIV entered the human population from
A) chimpanzees only.
B) gorillas only.
C) chimpanzees and baboons.
D) chimpanzees and mangabeys.
E) chimpanzees and capuchins.

Question

Quizplus · Accepted Answer

Phylogenetic and other analyses have shown that HIV-1, the most widespread type of HIV, came from chimpanzees and HIV-2 came from SIVsm, a type of SIV found in sooty mangabeys. Therefore, the best choice is (D) chimpanzees and mangabeys.

From Phylogenetic and Other Analyses, We Now Know That HIV