IV' Macroevolutionary Pattern

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IV. Macroevolutionary Pattern A. Tempo of
Speciation 1. gradualism 2. punctuated
equilibrium B. Phylogenetic Reconstruction 1.
an example 2. the problem of convergent
evolution 3. molecular traits
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A cartoon of the evolution of species diversity
Millions of species
One species
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Finches of the Galapagos Islands
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Fig. 24. 6
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Sympatric speciation ??
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Fig. 24. 17
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Two possible phylogenetic reconstructions for 6
species
1 2 3 4 5 6
1 2 3 4 5 6
OR
speciation
Ancestral species
Ancestral species
Time
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The problem of convergent evolution the
Tasmanian wolf is more closely related to the
kangaroo than it is to the North American red wolf
Tasmanian Wolf
Red Wolf
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Fig. 26.1
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A cartoon of the Tree of Life
Millions of species
One species