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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

On a phylogenetic tree, which term refers to lineages that diverged from the same place?

a. sister taxa

b. basal taxa

c. rooted taxa d

. dichotomous taxa

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

At what levels are cats and dogs part of the same group?

At each sutlevel in the taxonorric classiafcasion system, organisms become more similar, Dogs and wolves are the same species because they can breed and produce vahle oftspring, but they are difioront enough to be classified as different subspecies. (credit "plant": modification of work by berduchwal"sFlick, credit "irsecr: modification of work by Jon Sullvars; credit "iah". moditcation of work by Christian Mehifuhwer, credit "rabbir:- modificasion of work by, Aidan Wojas; credt "car": moditication of work by Jenathan Litbeck; credit "tox". modication of work by Kevin Bacher, NPS;, credit "jackaf: modificason of work by Thornas A. Hermarn, NBII, USGS; credit "wolp; modificasion of work by Robert Dewar, crede "dog"; modification of work by "digital_image_tantiflickr)

The transfer of genes by a mechanism not involving asexual reproduction is called:

a. meiosis

b. web of life

c. horizontal gene transfer

d. gene fusion

What do scientists use to apply cladistics?

a. homologous traits

b. homoplasies

c. analogous traits

d. monophyletic groups
See all solutions

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