Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 20, Problem 10RQ
What is true about organisms that are a part of the same clade?
- They all share the same basic characteristics
- They evolved from a shared ancestor
- They usually fall into the same classification taxa
- They have identical phytogenies.
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Which of the following is a problem with applying the phylogenetic species concept?
Some individuals we think are different species can interbreed
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Increased DNA sequencing could lead to different definitions of species
No one knows how to make a phylogeny
what is phylogeny?
A group whose members share one or more defining derived traits
The evolutionary history of a species or a group of species
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Phylogeny refers to the evolutionary descent of taxa. It refers to the relationship between ancestors and descendants and relationships among descendant taxa. It shows the lineage of taxa which can be summarized in a branching diagram called a phylogenetic tree.1. Express some basic evolutionary relationships among groups of microorganisms, plants, and animals;
2. Illustrate the relationship of organisms with their environment; and
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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
- The “kingdom” concept is considered out-of-date but most continue to use it in a revised manner. What are the traditional Linnaean taxonomic categories: Kingdom, phylum, ____________, ___________, ____________, _______________, species. When the traditional Linnaean taxonomic categories are not used, people can say “clade” or “taxon” for any genetic group.arrow_forwardA phylogenetic tree represents... a hypothesis about evolutionary relationships a branch point for species Binomial nomenclature Relationship between sister taxa Breakdown between large groups like kingdoms and small groups like speciesarrow_forwardLooking at the present, the evolutionary relationships between extant species can be seen in the presence of body parts sharing a common basic design. These structures are descended from a common ancestor. Sometimes, structures which no longer serve their original function are found in modern species. What is this structure?arrow_forward
- What is true about organisms that are a part of the same clade? a. They all share the same basic characteristics. b. They evolved from a shared ancestor. c. They usually fall into the same classification taxa. d. They have identical phylogenies.arrow_forwardWhy are simpler structures considered ancestral when we study phylogeny? * 1 point Complex structures often evolve from simpler ones. Time element is a major consideration. The presence of a character state among some members of a lineage and an outgroup indicates that the character is ancestral. Simpler structures were more likely to be found in fossil records.arrow_forwardUntil a few decades ago, birds were in their own class, Class Aves. But now we know they belong in Class Reptilia, not in their own group. Thus, the old way we looked at Class Reptilia was wrong... it was ______ Group of answer choices cladolytic polyphyletic paraphyletic monophyleticarrow_forward
- What is true about organisms that are a part of the same clade? a. They all share the same basic characteristics. b. They evolved from a shared ancestor. c. They all are on the same tree. d. They have identical phylogenies.arrow_forwardA critical concern of systematics is that the genera are , that all the species included in the genus are related to each other by a common ancestor, and that (circle one: all, most, at least half) of the descendants of that common ancestor are in the same genus. Such a genus is (circle one: polyphyletic, monophyletic).arrow_forwardI am getting confused on how to read/label the parts of this specific phylogenetic tree as well. The layout is confusing and I am struggling to identify the branches and clades, and just where the root of the tree is.arrow_forward
- Draw a phylogenythat accurately portrays the evolutionary relationships among the organisms listed. Each organism listed should be at the tip of a branch on the tree. Use the internet to discover what type of organisms they are, and refer to the textbook and course notes as you determine the relationships among these organisms. Label the phylogeny with each of the 6 species listed and write on the tree where the following derived traits evolved: specialized tissues, radial symmetry, bilateral symmetry, deuterostomy, protostomy, and ecdysozoan cuticle (the need for an animal to molt in order to grow). Anthopleura xanthogrammica Giant Green Anemone Chondrocladia lyra. harp sponge Diadema antillarum black sea urchin Euphasia superba. Antarctic krill Phrynosoma cornutum. horny toad Taenia saginata. beef tapewormarrow_forwardEarly classification systems from Aristotle to Linneaus would have been most like what we now call the ________. 1)biological species concept 2)morphospecies concept 3)phylogenetic species conceptarrow_forwardSystematics and Evolution What is the importance of homology in systematics?arrow_forward
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