Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 32.1, Problem 2R
Summary Introduction
To review:
The evidence in support of the monophyly of deuterostomes.
Introduction:
The echinoderms, chordates, and hemichordates are classified under one common group known as deuterostomes. The taxonomists consider the organisms under these classes to have been derived from a common ancestor, which denotes their monophyly.
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Life: The Science of Biology
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- Cyclostomes are often thought as of as “primitive” because they lack jaws. In what ways could the heads of cyclostomes be considered to be derived in their own way?arrow_forwardDraw a phylogeny of deuterostomes, indicating the mostlikely relationships among chordates, hemichordates, andechinoderms, with common examples of each grouparrow_forwardGive synapomorphic characters that would group Phylum Kinorhyncha and Priapulida as a sister taxonarrow_forward
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