Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 21.3, Problem 1R
Summary Introduction
To review:
By using the phylogenetic tree given, it is required to construct hypothesis about the origin of the virus lineages by using virus isolates that are given on the right of the tree.
Given:
It is given that a virus which spread in West Nile killed many bird species and caused inflammation of the human brain and in horses. In 1930, it was first found in Africa. Then in 1990, it was found throughout Eurasia. In 1999, it was first detected in New York and spread across the United States. The phylogenetic tree of West Nile is shown below:
Introduction:
A phylogenetic tree shows evolutionary relationship among various biological species. It is important to reconstruct with the help of phylogenic tree to know the past of the biological processes. In case of infectious diseases, it is important to know that how, when and where disease initially entered the human body and population. This can be done by making a phylogenic tree and tracing traits of the diseases.
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Life: The Science of Biology
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