11th Edition

ISBN: 9781266032844

Author: WILLEY

Publisher: MCG

Concept explainers

The history and science of origin and evolution comprise two events, the beginning of life and expansion of life. Our earth originated about 4.5 billion years ago. The term evolution is derived from two Latin words and means the act of unfolding or unrol…

Cladistics

Cladistics is a technique in the classification of organisms, where they are grouped into different clades. The proof for the relationships that are hypothesized is based on the shared derived characteristics known as synapomorphies. These characteristic…

Outgroups

Outgroups are significant in studying cladistics or phylogenetics (that describe the evolutionary relationship between different organisms). Further, it is also important to understand the differences and similarities between different organisms.

Taxonomy

It is the branch of biology that works with the identification of organisms at first, then naming, and classification of them into phenetic or phylogenetic groups (a classification system). In other words, it is the scientific study of biological diversi…

Phylogenetics

Phylogenetics is the scientific study of how various groups of organisms are related at the evolutionary level. It finds the relationship between various organisms based on their evolutionary similarities and differences. It is a part of the taxonomy. Al…

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Textbook Question

Chapter 19.4, Problem 2CC

List the differences between distance-based and character-based methods for constructing a phylogenetic tree. Which type is maximum parsimony? Explain your answer.

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Chapter 19.4, Problem 1CC

Chapter 19.4, Problem 3CC

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4. This question focuses on entrainment. a. What is entrainment? b. What environmental cues are involved in entrainment, and which one is most influential? c. Why is entrainment necessary? d. Assuming that a flash of darkness is an effective zeitgeber, what impact on circadian rhythms would you expect to result from an event such as the 2024 solar eclipse (assume it was viewed from Carbondale IL, where totality occurred at about 2 pm)? Explain your reasoning. You may wish to consult this phase response diagram. Phase Shift (Hours) Delay Zone Advance Zone Dawn Mid-day Dusk Night Dawn Time of Light Stimulus e. Finally, give a real-world example of how knowledge of circadian rhythms and entrainment has implications for human health and wellbeing or conservation biology. This example could be from your reading or from things discussed in class.

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Chapter 19 Solutions

CUSTOM PRESCOTT'S MICROBIOLOGY

Ch. 19.1 - What is a natural classification? What microbial...Ch. 19.1 - Prob. 2CC Ch. 19.1 - Consider the finding that bacteria capable of...Ch. 19.2 - What is the difference between a microbial species...Ch. 19.2 - Why is it important to have a type strain for each...Ch. 19.2 - The genus Salmonella was once thought to contain...Ch. 19.3 - What are the advantages of using each major group...Ch. 19.3 - Why is rRNA so suitable for determining...Ch. 19.3 - Prob. 3CC Ch. 19.4 - Could a phylotype be considered an OTU? What about...

Ch. 19.4 - List the differences between distance-based and...Ch. 19.4 - Prob. 3CC Ch. 19.4 - You are building a tree based on 16S rRNA sequence...Ch. 19.4 - Is HGT involved in movement of genes in the core...Ch. 19.5 - On what evidence is this hypothesis based?Ch. 19.5 - Construct a scenario in which each of the...Ch. 19.5 - Define ecotype. Do you think it is necessary to...Ch. 19.5 - What is the difference between the core genome and...Ch. 19.5 - Of the following genes, which do you think are...Ch. 19.5 - Prob. 4CC Ch. 19.6 - Prob. 1CC Ch. 19.6 - Describe two different situations in which it...Ch. 19 - Prob. 1RC Ch. 19 - Prob. 2RC Ch. 19 - Prob. 3RC Ch. 19 - Prob. 4RC Ch. 19 - Prob. 5RC Ch. 19 - Prob. 6RC Ch. 19 - Consider the fact that the use of 16S rRNA...Ch. 19 - You have recently established a pure culture of a...Ch. 19 - Prob. 3AL Ch. 19 - Prob. 4AL Ch. 19 - Prob. 5AL Ch. 19 - Prob. 6AL Ch. 19 - Prob. 7AL

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