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book The Living World 8th Edition by George Johnson cover

The Living World 8th Edition by George Johnson

النسخة 8الرقم المعياري الدولي: 978-0078024214
book The Living World 8th Edition by George Johnson cover

The Living World 8th Edition by George Johnson

النسخة 8الرقم المعياري الدولي: 978-0078024214
تمرين 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.
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The Living World 8th Edition by George Johnson
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