What Did a Phylogenetic Tree for Strains of Simian Immunodeficiency

question 9

Multiple Choice

What did a phylogenetic tree for strains of simian immunodeficiency virus and human immunodeficiency virus suggest?

• A) that the virus was transmitted to chimpanzees independently of humans and sooty mangabey monkeys
• B) that the virus was transmitted to humans independently of chimpanzees and other humans
• C) that the virus was transmitted to humans independently of chimpanzees and sooty mangabey monkeys
• D) that the virus was transmitted to humans independently of gorillas and chimpanzees