Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 27, Problem 25CTQ
How is it that morphological data alone might lead scientists to group animals into erroneous evolutionary relationships?
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What is the significance of taxonomic process in animals?
A 2015 article in Nature has summarized the early history of jawed vertebrates using highlights from recent discoveries and how they have changed our understanding of vertebrate evolution.
https://www.sciencedaily.com/releases/2014/04/140416133336.htm
Question: Given these recent discoveries, how should the cladogram below change? Describe it. It will likely be helpful to reference a synapomorphy noted on the cladogram.
Examine the image of the relatedness of vertebrates represented in this phylogenetic tree. Which statements are correctly inferred from this tree? Select all that apply.
A) The mammals are the outgroup in this tree.
B) Birds and dinosaurs share a recent common ancestor.
C) Mammals and birds are more closely related than any other species.
D) Turtles are equally as diverged from lizards and snakes as they are from crocodiles.
E) Lizards and snakes are more recently diverged from each other than they are from crocodiles.
Chapter 27 Solutions
Biology 2e
Ch. 27 - Figure 27.5 If a Hox 13 gene in a mouse was...Ch. 27 - Figure 27.6 Which of the following statements is...Ch. 27 - Figure 27.9 Which of the following statements...Ch. 27 - Which of the following is not a feature common to...Ch. 27 - During embryonic development, unique cell layers...Ch. 27 - Which of the following phenotypes would most...Ch. 27 - Which of the following organisms is most likely to...Ch. 27 - Which of the following is not possible? radially...Ch. 27 - An animal whose development is marked by radial...Ch. 27 - Consulting the modern phylogenetic tree of...
Ch. 27 - Which of the following is thought to be the most...Ch. 27 - As with the emergence of the Acoelomorpha phylum,...Ch. 27 - Which of the following periods is the earliest...Ch. 27 - What type of data is primarily used to determine...Ch. 27 - The time between 542-488 million years ago marks...Ch. 27 - Until recent discoveries suggested otherwise,...Ch. 27 - Plant life first appeared on land during which of...Ch. 27 - Approximately how many mass extinction events...Ch. 27 - Why might the evolution of specialized tissues be...Ch. 27 - Describe and give examples of how humans display...Ch. 27 - How have Hox genes contributed to the diversity of...Ch. 27 - Using the following terms, explain what...Ch. 27 - Explain some of the advantages brought about...Ch. 27 - Describe at least two major changes to the animal...Ch. 27 - How is it that morphological data alone might lead...Ch. 27 - Briefly describe at least two theories that...Ch. 27 - How is it that most if not all, of the extant...
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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
- Which major groupings of animals defined on the basis of morphological characters have been confirmed by molecular sequence studies?arrow_forwardWhat is the semantic web of two major classification of animalsarrow_forwardWhich of the following is a correct statement about the evolutionary relationships among vertebrates? Group of answer choices Mammals are more closely related to amphibians than amphibians are to snakes Mammals and snakes are more closely related to each other than either are to amphibians Crocodiles are more closely related to lizards than they are to birds Birds are more closely related to mammals than they are to crocodilesarrow_forward
- Should more weight should be given to genetic data or to information derived from comparative anatomy (phenotypes) in regard to taxonomic classification?arrow_forwardcreate a cladogram summarizing the phylogenetic relationships among the different Phyla. Take note that some characters may be secondarily lost during the evolution of these different. there is a photo of example of cladogram belowarrow_forwardWhat trait separates amphibians from primates on this cladogram? What separates rabbits and primates from crocodiles on this cladogram? Which organism is most related to the bird on this cladogram? What 5 traits do these two organisms share? Which organism will have DNA most similar to the bird? Which organism's DNA will differ the most from the bird?arrow_forward
- What are the hypotheses used to trace early evolution of animals?arrow_forwardHow is the traditional animal family tree similar or different from the phylogeny reflecting molecular data?arrow_forwardDraw a phylogenetic reconstruction for the hypothetical frog species. Once you have a cladogram you feel confident about, use lines and labels on cladogram to indicate where character states hanged. How many evolutionary changes occurred in your phylogeny? Is there evidence of an evolutionary convergence having occurred in your phylogeny? How about evolutionary reversals?arrow_forward
- How can we understand the evolutionary relationships among animals, and how, in turn,can we understand the biological traits that have given rise to such great diversity on a few branches of the animal tree of life?arrow_forwardAccording to the traditional classification of vertebrates, class Reptilia is a paraphyletic group because it does not include all descendants of a common ancestor. Which group has been left out of the classification but is really part of the reptile clade? Group of answer choices Birds Fish Amphibians Mammalsarrow_forwardIf you wanted to study the phylogenetic relationships of birds and lizards (from the same table displayed in the question above), which species would be the best outgroup to choose and why?arrow_forward
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