Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 20, Problem 20CTQ
Why is it so important for scientists to distinguish between homologous and analogous characteristics before building phylogenetic trees?
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Chapter 20 Solutions
Biology 2e
Ch. 20 - Figure 20.6 At what levels are cats and dogs...Ch. 20 - Figure 20.10 Which animals in this figure belong...Ch. 20 - Figure 20.11 What is the largest clade in this...Ch. 20 - What is used to determine phylogeny? mutations DNA...Ch. 20 - What do scientists in the field of systematics...Ch. 20 - Which statement about the taxonomic classification...Ch. 20 - On a phylogenetic tree, which term refers to...Ch. 20 - Which statement about analogies is correct? They...Ch. 20 - What do scientists use to apply cladistics?...Ch. 20 - What is true about organisms that are a part of...
Ch. 20 - Why do scientists apply the concept of maximum...Ch. 20 - The transfer of genes by a mechanism not involving...Ch. 20 - Particles that transfer genetic material from one...Ch. 20 - What does the trunk of the classic phylogenetic...Ch. 20 - Which phylogenetic model proposes that all three...Ch. 20 - How does a phylogenetic tree relate to the passing...Ch. 20 - Some organisms that appear very closely related on...Ch. 20 - List the different levels of the taxonomic...Ch. 20 - Dolphins and fish have similar body shapes. Is...Ch. 20 - Why is it so important for scientists to...Ch. 20 - Describe maximum parsimony.Ch. 20 - Compare three different ways that eukaryotic cells...Ch. 20 - Describe how aphids acquired the ability to change...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- How does a phylogenetic tree indicate major evolutionary events within a lineage?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_forwardWhen constructing phylogenetic trees, what is the purpose of applying maximum parsimony? Parsimony allows the researcher to "root" the tree. For trees based on morphology, the most parsimonious tree requires the maximum evolutionary events. The outgroup roots the tree, allowing the principle of parsimony to be applied. For trees based on morphology, the most parsimonious is the one that uses the simplest explanation of evolutionary events.arrow_forward
- Some organisms that appear very closely related on a phylogenetic tree may not actually be closely related. Why is this?arrow_forwardHow does a phylogenetic tree relate to the passing of time? Some organisms that appear very closely related to a phylogenetic tree may not actually be closely related (Example. Sharks and dolphins). Why is this?arrow_forwardCompare 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_forward
- How does a phylogenetic tree indicate the evolutionary relatedness of species?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_forwardDolphins and fish have similar body shapes. Is this feature more likely a homologous or analogous trait? Why is it so important for scientists to distinguish between homologous and analogous characteristics before building phylogenetic trees?arrow_forward
- Describe the key features of phylogenetic trees.arrow_forwardWhich of the following best explains why coalescent-based phylogenetic inference is important in the age of phylogenomics? A) Coalescent-based methods directly model gene tree histories independently to infer the species tree in a summary-based manner, which is important for phylogenomic analysis were hundreds to thousands of gene histories are analyzed. B) Coalescent-based methods have the most advanced evolutionary models of molecular evolution, which is important for phylogenomic analysis were hundreds to thousands of gene histories are analyzed. C) Coalescent-based methods are no more important than other types of phylogenetic inference, even for phylogenomic analyses. D) None of the above.arrow_forwardWhat is the difference between a phylogenetic tree and a cladogram? What the difference between "homologous traits" and "analogous traits"? What is the difference between "ancestral traits" and "derived traits"?arrow_forward
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