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The Living World 8th Edition by George Johnson
Edition 8ISBN: 978-0078024214The Living World 8th Edition by George Johnson
Edition 8ISBN: 978-0078024214 Exercise 12
Birds and mammals have four-chambered hearts, while most living reptiles have three-chambered hearts. Such a fundamental difference suggests birds and mammals should be placed in the same clade, and yet many biologists instead lump birds in with the reptile clade. Evaluate their decision to do so.
The correct way to read a family tree is
A) as a set of hierarchically nested clades.
B) sequentially across the tree branch ends.
C) ordered by degree of phenotypic difference.
D) ordered by the number of branch points.
The correct way to read a family tree is
A) as a set of hierarchically nested clades.
B) sequentially across the tree branch ends.
C) ordered by degree of phenotypic difference.
D) ordered by the number of branch points.
Explanation
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When we classify organisms, we create a ...
The Living World 8th Edition by George Johnson
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