'Molecular homologies' diaporamas de présentation

Chapter 25

Chapter 25. Phylogeny and Systematics. Overview: Investigating the Tree of Life. Phylogeny is the evolutionary history of a species or group of related species Biologists draw on the fossil record, which provides information about ancient organisms.

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Mechanisms of Evolution

Mechanisms of Evolution. Chapter 22. Descent with Modification A Darwinian View of Life. Chapter 22. History of Evolution Science. Ancient Beliefs. Plato (428-348 BC) idealism the "idea" is an eternal, unchanging essence variation has no meaning only essence matters

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johnkyrk/evolution.html

http://www.johnkyrk.com/evolution.html. Palaeontology. Life has existed for more than 500 million years Very different than today None of the top predators we have around today were around at the time of the dinosaurs. Fossils as evidence for evolution.

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Ch. 26 Phylogeny and the Tree of Life

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Chapter 19

Organizing Information About Species: Taxonomy and Cladistics. Chapter 19.

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Chapter 22

Chapter 22. Descent with Modification: A Darwinian View of Life Part B: Evidence for Evolution. Recap main ideas of natural selection:. Evolution is change in species over time. There is overproduction of offspring, which leads to competition for resources.

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BELL WORK : Answer the following question:

BELL WORK : Answer the following question:. Two species of mice live in a field in the middle of East Texas. One mouse species is white with black spots, the other is brown with white spots.

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