Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 24, Problem 6TYK
Summary Introduction
Introduction:
Systematics study helps in providing the classification, scientific name, keys for identification, data of evolutionary history, and distribution for an organism. Molecular characters are kind of taxonomic characters that help in the studies of systematic analysis like sequence of proteins, combination of two different DNA (deoxyribonucleic acid) hybridizations, and other molecular differences.
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Which of the following is TRUE about a phylogenetic tree?
It provides a drawing the reflects the proven relationships between living and extinct species.
b
It provides a hypothetical model of the relationships between extinct species.
c
It provides a hypothetical model of the relationships between living and extinct species.
d
It a diagram used by scientists that provides a model of evolutionary relationships without the need for scientific data.
Which of the following are true about outgroups?
a.
They help identify plesiomorphic traits in the phylogeny
b.
They are a taxa that is known to not be within the species group in question
c.
They do not have any autapomorphic traits
d.
They are less evolved than the species of interest
People studying fossils have to employ which of the following species concepts?
a.
The Morphospecies Concept
b.
The Biological Species Concept
c.
The Phylogenetic Species Concept
d.
The Physical Species Concept
Chapter 24 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 24.1 - How does the system of binomial nomenclature...Ch. 24.1 - Prob. 2SBCh. 24.2 - What is the difference between a phylogenetic tree...Ch. 24.2 - What are the differences between a monophyletic...Ch. 24.3 - Prob. 1SBCh. 24.3 - Prob. 2SBCh. 24.3 - Prob. 3SBCh. 24.4 - Prob. 1SBCh. 24.5 - How does outgroup comparison facilitate the...Ch. 24.5 - Prob. 2SB
Ch. 24.5 - Prob. 3SBCh. 24.6 - What assumption underlies the use of genetic...Ch. 24.6 - Prob. 2SBCh. 24.7 - Prob. 1SBCh. 24.7 - Prob. 2SBCh. 24 - The evolutionary history of a group of organisms...Ch. 24 - Prob. 2TYKCh. 24 - Which of the following does not help systematists...Ch. 24 - In a cladistic analysis, a systematist groups...Ch. 24 - Prob. 5TYKCh. 24 - Prob. 6TYKCh. 24 - Prob. 7TYKCh. 24 - When systematists study morphological or...Ch. 24 - Which of the following pairs of structures are...Ch. 24 - To construct a phylogenetic tree by applying the...Ch. 24 - Prob. 11TYKCh. 24 - Prob. 12TYKCh. 24 - Prob. 13TYKCh. 24 - Prob. 14TYKCh. 24 - Imagine that you are a systematist studying a...Ch. 24 - Design an Experiment Imagine that you are trying...Ch. 24 - Prob. 17TYKCh. 24 - The phylogenetic tree for 12 cat species (Felidae)...
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- Why is molecular data for phylogenetic inference best analyzed with use of an explicit model of molecular evolution? A) This is true of morphological data, not molecular data, it is impossible to model changes in molecular sequence data because it is constantly evolving. B) Because molecular data is known to only experience random changes and is constantly evolving, a chaotic model of evolution can universally be applied to molecular sequence data for phylogenetic analysis. C) Because molecular data is known to experience non-random changes in terms of the likelihood of different types of mutations -- transitions vs. transversions, at different codon positions, which can be used to infer sequence evolution and relationship. D) None of the above.arrow_forwardIf two otherwise dissimilar organisms share similar genomic DNA, to what would you attribute the genomic similarity? A)DNA is not a reliable basis for phylogenetic decisions. B)The shared genes have evolved a number of times and have no phylogenetic significance. C)The shared genes are ancient and probably no longer function within the altered physiological states of modern organisms. D)The shared genes developed early in evolution and are likely to be applicable to a wide diversity of organisms. E)The two taxa are more closely related than formerly believed because they may share a common ancestorarrow_forwardWhich type of characteristic would be MOST helpful in constructing a phylogenetic tree? a. A characteristic found in none of the selected organisms b. A characteristic found in one of the selected organisms c. A characteristic found in 2-5 of the selected organisms d. A chracteristic found in all of the selected organismsarrow_forward
- Which of the following are true about outgroups? (multiple answers allowed) A) they help identify plesiomorphic traits in the pylogeny B) they are a taxa that is known to not be within the species group in questionC) They do not have any autapomorphic traits D)they are less evolved than the species of interestarrow_forwardWhat consequences does horizontal gene transfer pose for evolutionary biologists? a. It can pose difficulty in the reconstruction of phylogenetic trees, because it can obscure phylogenetic relationships. b. It can pose physiological problems in some organisms, making it very hard to study them. c. It can pose difficulty in breeding between different individuals of the same species. d. Because it is transfer of genes between the same species, it can make individuals look very more similar than they actually are. e. All of the above.arrow_forwardWhich of the following are true about outgroups? A. They help identify plesiomorphic traits in the phylogeny B. They are a taxa that is known to not be within the species group in question C. They do not have any autapomorphic traits D. They are less evolved than the species of interest *I have already tried: A A&C ABC&D AB&C none of these workedarrow_forward
- Suppose a new monkey species, Species A, has just been discovered. You are a primatologist, and you are trying to determine its phylogenetic position. You are sure its closest relatives are Species B and Species C, but you want to know which one it is more closely related to or if it is equally closely related to both. You are using Species D, a more distant relative, as the outgroup. You have come up with a list of ten characters you think will be useful in resolving this phylogeny, and you have determined the character state of each species for each character. The character states are: (in image below) Estimate the phylogeny of these taxa by plotting the changes on each of the three possible phylogenies for species A, B, and C and determining which tree requires the fewest evolutionary changes. HINT: First, review the carnivorans problem in Section 4.3 of the Zimmer and Emlen textbook. To solve the above problem, assume the outgroup has the ancestral character state for each…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_forwardThe number of possible trees resulting from phylogenetic analysis grows exponentially with the number taxa, such that in a 22 taxon analysis there are more possible unrooted trees than there are stars in the universe. A) True B) False C) It depends on the inference method and optimality criteria used. D) Number of taxa and number of unrooted tree possibilities are unrelated in phylogenetic analysis.arrow_forward
- What is not always true of a valid binomial species name like Homo sapiens? A. It includes the genus name B. It is the first published name applied to the biological species C. It is defined by autapomorphic character states D. Technically, it consists of a noun and an adjective asaparrow_forwardWith improving technology, acquiring DNAsequences from different organisms becomeseasier each year. With that in mind, some authors(e.g., Scotland et al. 2003, Systematic Biology52 [4]: 539–548) have suggested that the use ofmorphological data is less important than DNAsequence data and have called for less emphasison the use of comparative morphology in building phylogenies. Other authors maintain thatdespite the explosion of molecular data available, morphology still has an important role inphylogenetics (for examples, see Wiens 2004,Systematic Biology 53 [4]: 653–661 and Will andRubinoff 2004, Cladistics 20 [1]: 47–55). Whatare the reasons for and against using morphological data in phylogenetic reconstruction?When might morphological data be especiallyimportant?arrow_forwardConstructing a cladogram______ . a. may involve parsimony analysis b. helps us rank species into taxa c. reveals convergent structures d. is a necessary part of DNA barcodingarrow_forward
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