The attached image has the following Newick format: ((HIV-1 retropepsin:0.67441,(HIV-2 retropepsin:0.40370, Simian immunodeficiency:0.40370):0.27071):0.963537,(Bovine immunodeficiency:1.34405,Feline immunodeficiency:1.34405):0.295328); Examine the branch lengths. What do they tell you about the evolutionary time between the branch points? • Which branchings are more ancient and which are more recent? • What would you conclude about these immunodeficiency virus proteases, based on this small analysis?

Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter21: Viruses
Section: Chapter Questions
Problem 27CTQ: In this section, you were introduced to different types of viruses and viral diseases. Briefly...
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The attached image has the following Newick format:

((HIV-1 retropepsin:0.67441,(HIV-2 retropepsin:0.40370, Simian immunodeficiency:0.40370):0.27071):0.963537,(Bovine immunodeficiency:1.34405,Feline immunodeficiency:1.34405):0.295328);

Examine the branch lengths. What do they tell you about the evolutionary time between the branch points?
• Which branchings are more ancient and which are more recent?
• What would you conclude about these immunodeficiency virus proteases, based on this small analysis?

Tree Rendering results
- S5
S4
- S3
-S2
-S1
0.7
Image 20. Phylogenetic tree generated where S1 is HIV-1 retropepsin, S2 is HIV-2 retropepsin.
S3 is Simian immunodeficiency virus retropepsin, S4 is Bovine immunodeficiency virus
retropepsin, and S5 is Feline immunodeficiency virus retropepsin.
Transcribed Image Text:Tree Rendering results - S5 S4 - S3 -S2 -S1 0.7 Image 20. Phylogenetic tree generated where S1 is HIV-1 retropepsin, S2 is HIV-2 retropepsin. S3 is Simian immunodeficiency virus retropepsin, S4 is Bovine immunodeficiency virus retropepsin, and S5 is Feline immunodeficiency virus retropepsin.
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