Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 20.3, Problem 2CC
The most parsimonious tree of evolutionary relationships can be inaccurate. How can this occur?
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The most parsimonious tree of evolutionary relationshipscan be inaccurate. How can this occur?
What are the two key facets of the Darwinian Theory of evolution? Explain them briefly.(If possible answer should be in accordance with NCERT Biology).
When 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.
Chapter 20 Solutions
Campbell Biology in Focus
Ch. 20.1 - Based on the tree in Figure 20.4, are leopards...Ch. 20.1 - Which of the trees shown here depicts an...Ch. 20.1 - Prob. 3CCCh. 20.2 - Decide whether each of the following pairs of...Ch. 20.2 - WHAT IF? Suppose that two species, A and B, have...Ch. 20.3 - Prob. 1CCCh. 20.3 - The most parsimonious tree of evolutionary...Ch. 20.3 - Prob. 3CCCh. 20.4 - What is a molecular clock? What assumption...Ch. 20.4 - MAKE CONNECTIONS Review Concept 14.5. Then...
Ch. 20.4 - WHAT IF? Suppose a molecular clock dates the...Ch. 20.5 - Why is the kingdom Monera no longer considered a...Ch. 20.5 - Prob. 2CCCh. 20.5 - Prob. 3CCCh. 20 - In a comparison of birds and mammals, the...Ch. 20 - To apply parsimony to constructing a phylogenetic...Ch. 20 - Prob. 3TYUCh. 20 - Prob. 4TYUCh. 20 - Prob. 5TYUCh. 20 - If you were using cladistics to build a...Ch. 20 - Prob. 7TYUCh. 20 - SCIENTIFIC INQUIRY DRAW IT (a) Draw a phylogenetic...Ch. 20 - FOCUS ON EVOLUTION Darwin suggested looking at a...Ch. 20 - Prob. 10TYUCh. 20 - SYNTHESIZE YOUR KNOWLEDGE This West Indian manatee...
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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
- A phylogenetic tree is a branching diagram that shows the evolutionary relationship among different biological species or genes or organisms from a common ancestor. They are used as a research tool in various fields. All of the provided statements are true regarding phylogenetic trees, except? It is considered as a hypothesis of the evolutionary path. It is a tool that shows the evolutionary pathway. It shows evolutionary history through common ancestors. It shows only the phenotypic similarity.arrow_forwardCompare and contrast the neutral theory of evolution and the Darwinian (i.e., selectionist) theory of evolution. Explain why the neutral theory of evolution is sometimes called non-Darwinian evolution.arrow_forwardBriefly discuss the differences in how a selectionist (one that believes that Natural Selection is a strong evolutionary force) and a neutralist (one that believes that genetic drift is a strong evolutionary force) views the following: molecular clock, evolution of coding sequences, evolution of "pseudogenes".arrow_forward
- Discuss at least two reasons why we cannot consider evolution by natural selection progressive.arrow_forwardThe biological species concept is based on the assumption that species are reproductively isolated and do not share genes. And yet a number of organisms that are considered different species hybridize (mate and exchange genes). Hybridization between different species is more common in plants than in animals. Propose some possible reasons for this difference.arrow_forwardCharles Darwin’s claim, that the species level of classification is just as arbitrary as that of any other taxonomic level, is supported by all of the following observational failures except: the inability of a sexually-reproducing eukaryotic species to interbreed with a different species the inability of a cloning species lacking biparental reproduction to interbreed with a different species the inability of an asexual eukaryotic species to interbreed with a different species the inability of an extinct species (like a dinosaur) to interbreed with a different species the inability of a prokaryotic species to interbreed with a different species.arrow_forward
- A scientist is attempting to build a cladogram that shows the evolutionary closeness of three organisms in relation to humans. After doing DNA analysis, they determine that the organisms share the following percentages of DNA: Organism A and humans share 85% of their DNA. Organism B and humans share 80% of their DNA. Organism C and humans share 90% of their DNA. Based on this information, which order should they go on the cladogram (from least related to most related)?arrow_forwardCharles Darwin’s claim, that the species level of classification is just as arbitrary as that of any other taxonomic level, is supported by all of the following observational failures except: the inability of a cloning species lacking biparental reproduction to interbreed with a different species the inability of an asexual eukaryotic species to interbreed with a different species the inability of a sexually-reproducing eukaryotic species to interbreed with a different species the inability of a prokaryotic species to interbreed with a different species the inability of an extinct species (like a dinosaur) to interbreed with a different speciesarrow_forwardidentify and define the four forces of evolution. provide an actual or possible real-world example of each.arrow_forward
- In evolution, what is Phylogenetic path analysis? I just need a general description of how it works.arrow_forwardHow can we use the hardy Weinberg equation to identify cases where evolution is or is not occurringarrow_forwardUsing the concepts of variability, environmental pressure and natural selection, how does the synthetic theory of evolution explain Darwinian natural selection?arrow_forward
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