What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 12, Problem 4SA
Summary Introduction
To review:
Apart from relationships among organisms, what else can be understood using phylogenetic trees.
Introduction:
A phylogenetic tree is a tree-like representation of organisms, to show how they are related to one another and whether one evolved from the other.
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Examine the following phylogenetic tree illustrated in Figure shown in the picture.
In general, what does a phylogenetic tree illustrate?
How do you compare the relationships of organisms BB, CC, and DD?
a) What is a phylogenetic tree?
b) What is a branch point?
c) What are sister taxa?
d) What is a ‘rooted’ phylogenetic tree?
Do you find it easy to interpret phylogenetic trees?
What aspects are the most challenging or what aspects of the tree can be easily misinterpreted?
What strategies can students use to correct or avoid these common misinterpretations?
Do you consider phylogenetic trees to be reliable indicators of evolutionary relationships?
Include a reference.
Chapter 12 Solutions
What Is Life? A Guide to Biology with Physiology
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- Draw a simple phylogenetic tree and identify a node, a branch, and an outgroup.arrow_forwardDescribe at least one reason that the traditional phylogenetic tree model may require modification.arrow_forwardBased on the past activities about constructing of phylogenetic trees, how do you distinguish characteristics between primitive and derived characteristics? provide and example to your answerarrow_forward
- How does a phylogenetic tree indicate the evolutionary relatedness of species?arrow_forwardWithin the field of phylogenetics, what does a “bootstrap value” represent? (write/make 3 points for this question)arrow_forwardExamine the following phylogenetic tree illustrated in Figure shown in the first picture. In general, what does a phylogenetic tree illustrate? How do you compare the relationships of organisms BB, CC, and DD? Given the following organisms in the Table in the second picture, number them in terms of which is relatively closest and distant. Number 1 refers to closest.arrow_forward
- What is the purpose of using an outgroup when reconstructing a phylogenetic tree? [at least mention 4 points]arrow_forwardWith two specific examples, explain why phylogenetics is a useful scientific tool for studying Organismal biology?arrow_forwardOutline the general considerations used in building a phylogenetic treearrow_forward
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