BIOLOGY: CONCEPTS AND INVEST. ACCESS
BIOLOGY: CONCEPTS AND INVEST. ACCESS
5th Edition
ISBN: 9781264448678
Author: Hoefnagels
Publisher: MCG
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Chapter 21.17, Problem 1MC
Summary Introduction

To determine:

The approaches that are used by the researchers to draw the conclusion about the events that occurred hundreds of millions of year ago by investigating the DNA of living sponges.

Concept introduction:

Animals are likely to be originated in Precambrian times in the oceans. The major group of animals appeared after an eventful millions of year interval of the Cambrian period. The evolution process occurred so quickly during this period and results in the evolution of animals from sponges to early chordates.

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Chapter 21 Solutions

BIOLOGY: CONCEPTS AND INVEST. ACCESS

Ch. 21.2 - Prob. 4MCCh. 21.3 - Prob. 1MCCh. 21.3 - Prob. 2MCCh. 21.3 - Prob. 3MCCh. 21.3 - Prob. 4MCCh. 21.4 - Prob. 1MCCh. 21.4 - Prob. 2MCCh. 21.4 - Prob. 3MCCh. 21.4 - Prob. 4MCCh. 21.5 - Prob. 1MCCh. 21.5 - Prob. 2MCCh. 21.5 - Prob. 3MCCh. 21.5 - Prob. 4MCCh. 21.5 - Prob. 5MCCh. 21.6 - What defining feature arose in the annelid lineage...Ch. 21.6 - Prob. 2MCCh. 21.6 - Prob. 3MCCh. 21.6 - Prob. 4MCCh. 21.6 - Prob. 5MCCh. 21.7 - Prob. 1MCCh. 21.7 - Prob. 2MCCh. 21.7 - Prob. 3MCCh. 21.7 - Prob. 4MCCh. 21.7 - Prob. 5MCCh. 21.8 - Prob. 1MCCh. 21.8 - Prob. 2MCCh. 21.8 - Prob. 3MCCh. 21.8 - Prob. 4MCCh. 21.8 - What are the advantages and disadvantages of an...Ch. 21.8 - Prob. 6MCCh. 21.8 - Prob. 7MCCh. 21.8 - Prob. 8MCCh. 21.9 - Prob. 1MCCh. 21.9 - Prob. 2MCCh. 21.9 - What are some examples of echinoderms?Ch. 21.9 - Prob. 4MCCh. 21.10 - What are four key defining characteristics of...Ch. 21.10 - Prob. 2MCCh. 21.10 - Prob. 3MCCh. 21.10 - Prob. 4MCCh. 21.10 - Differentiate between an ectotherm and an...Ch. 21.10 - How does the number of heart chambers affect the...Ch. 21.11 - Compare and contrast the features of tunicates and...Ch. 21.11 - Prob. 2MCCh. 21.11 - Prob. 3MCCh. 21.12 - Prob. 1MCCh. 21.12 - Prob. 2MCCh. 21.13 - Prob. 1MCCh. 21.13 - Prob. 2MCCh. 21.13 - Prob. 3MCCh. 21.14 - Prob. 1MCCh. 21.14 - Prob. 2MCCh. 21.14 - What features distinguish the three orders of...Ch. 21.15 - Prob. 1MCCh. 21.15 - Prob. 2MCCh. 21.15 - Prob. 3MCCh. 21.15 - Prob. 4MCCh. 21.15 - Prob. 5MCCh. 21.15 - Prob. 6MCCh. 21.16 - Prob. 1MCCh. 21.16 - Prob. 2MCCh. 21.16 - Prob. 3MCCh. 21.17 - Prob. 1MCCh. 21.17 - Prob. 2MCCh. 21 - Following gastrulation, the cells that have folded...Ch. 21 - Prob. 2MCQCh. 21 - How is the body structure of an annelid different...Ch. 21 - Prob. 4MCQCh. 21 - Prob. 5MCQCh. 21 - Prob. 6MCQCh. 21 - Prob. 7MCQCh. 21 - Prob. 8MCQCh. 21 - Prob. 9MCQCh. 21 - Since a tunicate is considered to be a chordate,...Ch. 21 - Prob. 11MCQCh. 21 - Prob. 12MCQCh. 21 - How do reptiles and mammals differ from...Ch. 21 - Prob. 14MCQCh. 21 - Since a whale is a mammal, it must a. have scales....Ch. 21 - Compare the nine major animal phyla in the order...Ch. 21 - Prob. 2WIOCh. 21 - Prob. 3WIOCh. 21 - Distinguish between (a) radial and bilateral...Ch. 21 - Prob. 5WIOCh. 21 - Prob. 6WIOCh. 21 - Prob. 7WIOCh. 21 - Compare and contrast the roundworm body structure...Ch. 21 - Make a chart showing the characteristics of each...Ch. 21 - List the features that determine the echinoderms...Ch. 21 - Prob. 11WIOCh. 21 - How do tunicates and lancelets differ from fishes...Ch. 21 - Draw from memory a phylogenetic tree that traces...Ch. 21 - Prob. 14WIOCh. 21 - List five adaptations that enable (a) fishes to...Ch. 21 - Prob. 16WIOCh. 21 - Prob. 17WIOCh. 21 - Summarize the evidence for the idea that birds are...Ch. 21 - Prob. 19WIOCh. 21 - Prob. 20WIOCh. 21 - How are fishes, amphibians, nonavian reptiles,...Ch. 21 - Give three examples of interactions between...Ch. 21 - Prob. 23WIOCh. 21 - Prob. 24WIOCh. 21 - Prob. 1PITCh. 21 - Prob. 2PITCh. 21 - 3. Draw a concept map that summarizes the...
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