The evolutionary tree of HIV-1 revels that a. the virus jumped from chimpanzees to humans four times. b. HIV is a monophyletic clade that originated from the same strain of SIV. c. the SIV strain that infects gorillas is the same strain that infects chimpanzees. d. western chimpanzees are more closely related to gorillas than eastern chimpanzees.
Added by Dennis B.
Step 1
Evolutionary trees, also known as phylogenetic trees, show the relationships between different species or groups of organisms based on their evolutionary history. Show more…
Show all steps
Your feedback will help us improve your experience
Sirisa Reddy and 72 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Sirisa R.
This is an evolutionary tree based on RNA sequences of various strains of HIV (human immunodeficiency virus) and SIV (simian immunodeficiency virus; simians are monkeys and apes). The stars indicate HIV strains (those that infect humans). There are two main strains of HIV (1 and 2). HIV-1 is the most common and widespread strain. This tree shows how various strains of HIV evolved from SIV. The brackets indicate which species the SIV strains infect (two subspecies of chimpanzee and the sooty mangabey, a type of monkey). The unlabeled strains infect other species of monkeys. As viruses evolve, they can jump from one host species to another. Based on this tree, which of the following statements is true?
Madhur L.
Joanna Q.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD