WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
5th Edition
ISBN: 9781319272531
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 12, Problem 5SA
Summary Introduction
To analyze:
Why analogous features pose problems for biologists while constructing a phylogenetic tree.
Introduction:
Phylogenetic trees are constructed using the similarities between organisms as a measure of how closely they are related to each other. Analogous features develop due to convergent evolution.
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Chapter 12 Solutions
WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
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- Why is it so important for scientists to distinguish between homologous and analogous characteristics before building phylogenetic trees?arrow_forwardWhat is the purpose of using an “outgroup” when reconstructing a phylogenetic tree? (Write 4 points)arrow_forwardWhich statement is usually true about phylogenetic trees? a) nodes represent points when traits have evolved b) branch tips that are next to each other are more closely related c) the branching pattern describes the hypothesized evolutionary relationships between the taxa d) the order of the branch tips (left to right) indicates which taxa are more advanced evolutionarilyarrow_forward
- Compare phylogenetic trees created using DNA data with phylogenetic trees created using chromosomal banding patterns. Which technique do you think is more valuable and why?arrow_forwardReferring to the phylogenetic tree shown above, answer the following questions: 1. How many OTUs are included in the phylogenetic analysis? 2. How many clades are there? 3. What is an autapomorphic trait of the domestic cat? Explain why? 4. What is the shared derived trait (synapomorphy) in the Family Felidae? Explain why?arrow_forwardWhy is it important for scientists to distinguish between homologous and analogous characteristics before building a Phylogenetic tree?arrow_forward
- Examine 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_forwardWhat is the purpose of using an outgroup when reconstructing a phylogenetic tree? [at least mention 4 points]arrow_forwardWhat is the difference between a cladogram and a phylogenetic tree? Given a cladogram for a group of species, what additional interpretation is needed to obtain a phylogenetic tree?arrow_forward
- 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?arrow_forwardwhat is a major problem with morphologically based analysis of wale placement in a phylogenetic tree ?arrow_forwardSequence data from OTUs are provided in the table below with values provided as (percentage distance x 1000) measurements. Determine the phylogenetic tree from the data in the table below using the UPGMA procedure mentioned in class. Berenstain Bear Berentstain Bear Care Bear Gummi Bear Paddington Bear Care Bear 160 Gummi Bear 150 40 Paddington Bear 80 130 120 Place each OTU in the correct box on the appropriate tree below. Do not label the incorrect tree. Care Bear Gummi Bear Berenstain Bear Paddington Beararrow_forward
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