Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 1, Problem 15RQ
Where in a phylogenetic tree would you expect to find the organism that had evolved most recently?
- at the base
- within the branches
- at the nodes
- at the branch tips
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What part of this phylogenetic tree does the arrow point to?
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When building a phylogenetic tree, where do you place a number used to designate a change in character state?options:
at a mark crossing the branch for the species that exhibits the new state
at a node where two branches diverge
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When building a phylogenetic tree, where do you place a letter used to designate a species?
options:
at a mark crossing the branch to the clade that includes that species
at a node where two branches diverge
at the end of a branch unique to that species
Chapter 1 Solutions
Biology 2e
Ch. 1 - Figure 1.6 In the example below, the scientific...Ch. 1 - Figure 1.7 Decide if each of the following is an...Ch. 1 - Figure 1.16 Which of the following statements is...Ch. 1 - The first forms of life on Earth were plants...Ch. 1 - A suggested and testable explanation for an event...Ch. 1 - Which of the following sciences is not considered...Ch. 1 - The type of logical thinking that uses related...Ch. 1 - The process of helps to ensure that a scientist’s...Ch. 1 - A person notices that her houseplants that are...Ch. 1 - The smallest unit of biological structure that...
Ch. 1 - Viruses are not considered living because they...Ch. 1 - The presence of a membrane-enclosed nucleus is a...Ch. 1 - A group of individuals of the same species living...Ch. 1 - Which of the following sequences represents the...Ch. 1 - Where in a phylogenetic tree would you expect to...Ch. 1 - Although the scientific method is used by most of...Ch. 1 - Give an example of how applied science has had a...Ch. 1 - Name two topics that are likely to be studied by...Ch. 1 - Thinking about the topic of cancer, write a basic...Ch. 1 - Select two items that biologists agree are...Ch. 1 - Consider the levels of organization of the...Ch. 1 - You go for a long walk on a hot clay. Give an...Ch. 1 - Using examples, explain how biology can be studied...
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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
- When reading a phylogenetic tree, which of the following is true regarding the evolutionary relationships among the taxa represented on the tree? Taxa located at adjacent tips of the branches are always more closely related to each other than to other taxa on the tree. Therefore, a species is always equally related to the taxon on the branch immediately to the right it and the taxon on the branch immediately to the left of it The branch lengths always represent the amount of morphological change between taxa The internal nodes (branching points) of the tree represent the most recent common ancestors of the taxa connected by the branches The position of taxa on the tree is completely arbitrary and does not reflect their evolutionary relationshipsarrow_forwardDo you find it easy to interpret phylogenetic trees? What aspects are the most challenging or what aspects of the tree can be easily misinterpreted? What strategies can students use to correct or avoid these common misinterpretations? Do you consider phylogenetic trees to be reliable indicators of evolutionary relationships? Include a reference.arrow_forwardPhylogenetic trees are a type of model that can be used to show how organisms are related through common ancestry. The phylogenetic tree model represents nodes numbered 1 through 8. Using evidence from the phylogenetic tree determine which species would be MOST closely related to the species on branch C? Question options: The species on Branch A is most closely related to the species on branch C because they share the most recent common ancestor at node 1. The species on Branch B is most closely related to the species on branch C because they share the greatest number of common +ancestors. The species on Branch A & B are both most closely related to the species on branch C because they share the most most recent common ancestor at node 2. The species on Branches F, G, H, and I are all equally related to the species on branch C because they all split from a common ancestor at the same time which is illustrated by having nodes 2 and 7 at the…arrow_forward
- Examine the following phylogenetic tree illustrated in Figure shown in the first picture. In general, what does a phylogenetic tree illustrate? How do you compare the relationships of organisms BB, CC, and DD? Given the following organisms in the Table in the second picture, number them in terms of which is relatively closest and distant. Number 1 refers to closest.arrow_forwardWhat is the purpose of using an “outgroup” when reconstructing a phylogenetic tree? Write 4 points at leastarrow_forwardCircle which of the phylogenetic trees is/are different from the one at the top:arrow_forward
- When several possible phylogenetic trees can be produced from a data set, the most parsimonious tree: O is the one that shows the smallest number of synapomorphies. O is the one that shows the largest number of nodes. O is the one that shows the largest number of analogous characteristics. O is the one that shows the smallest number of evolutionary changes. O is the one that shows the smallest number of branches.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_forwardPhylogenetic tree: Change in characteristics occurs in lineages over time. Rate of mutation is not constant over time and for all lineages in phylogenetic tree. So, leaves can have different distance from the root. As, we have no idea how these rabbits are related in evolution. Construct a phylogenetic tree from table below using NeighborJoining Method. where X is 57.arrow_forward
- Cladograms and phylogenetic trees are both examples of evolutionary trees. While both types contain groups of organisms that descended from a common ancestor, phylogenetic trees are typically constructed in a way where the length of the "branches" and their relation to other organisms on the tree represent the inferred evolutionary change that actually occurred. On the other hand, cladograms typically display "branches" that are of equal distance to one another.The primary purpose of this assignment is for you become comfortable reading evolutionary trees, to accurately determine recent common ancestors, to identify which organisms are extinct (dead), extant (living), and the general relationship genetics plays in the overarching process of evolution. 1. What types of evidence could scientists look at to make an accurate evolutionary tree?arrow_forwardWhat is the purpose of using an “outgroup” when reconstructing a phylogenetic tree? (Write 4 points)arrow_forwardPhylogenetic trees are diagrams used to reflect evolutionary relationships among organisms or groups of organisms. _______ trees have a single ancestral line to which all organisms in the diagram relate to. ______ do not have a common ancestor but do show relationships among species.arrow_forward
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