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Chapter 20: Q.16 (page 504)

How does a phylogenetic tree relate to the passing of time?

Short Answer

Expert verified

A phylogenetic tree depicts the evolutionary history of a species, and these evolutionary events are illustrated across time.

Step by step solution

01

Introduction

A phylogenetic tree is a visual depiction of a species' or a group of species' evolutionary history. The tree shows various species arising at various periods or from various locations.

02

Explanation

With relation to time, the evolutionary tree displays the series of events that caused various components to diverge from one or more common ancestors. The common ancestors are represented by a stem that splits into two or more branches, each reflecting a divergence event that leads to another node, each representing a new species divergence.

03

Conclusion

The evolutionary history of a species is displayed in a phylogenetic tree, and these evolutionary events are depicted with regard to time.

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Most popular questions from this chapter

What do scientists use to apply cladistics?

a. homologous traits

b. homoplasies

c. analogous traits

d. monophyletic groups

Why do scientists apply the concept of maximum parsimony?

a. to decipher accurate phylogenies

b. to eliminate analogous traits

c. to identify mutations in DNA codes

d. to locate homoplasies

What does the trunk of the classic phylogenetic tree represent?

a. single common ancestor

b. pool of ancestral organisms

c. new species

d. old species

Which statement about the taxonomic classification system is correct?

a. There are more domains than kingdoms.

b. Kingdoms are the top category of classification. c. Classes are divisions of orders.

d. Subspecies are the most specific category of classification.

List the different levels of the taxonomic classification system.
See all solutions

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