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Lecture 10 posted

Lecture 10 posted - BIO 311D LECTURE 10 Macroevolution...

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Unformatted text preview: BIO 311D LECTURE 10 Macroevolution, adaptation, and speciation 2/7/07 • 1890 – 2 • 3 young; 2 x year; 6 young per year per pair • 100% annual mortality • • • • • • 1891 – 6 1892 – 18 1893 – 54 1894 – 162 1895 – 486 1896 - 1458 • • • • • 1900 – 118,098 1910 – 6,973,568,802 1930 – 2.43 x 1019 1955 – 2.06 x 1031 1985 – 4.24 x 1045 Adaptation Adaptations can be AMAZING! Constraints on adaptations Further thoughts… Macroevolution – Other definitions – 1. 2. 3. Speciation What defines a species? What are the criteria we should use? Typological Species concept – Morphological species concept – Biological Species Concept – Problems with the biological species concept: Evolutionary species concept – Problems with the evolutionary species concept: Circular overlap Hybrid swarm Phylogenetic species concept Molecular biology Summary of species definitions ...
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Lecture 10 posted - BIO 311D LECTURE 10 Macroevolution...

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