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BB lecture 2-11-09 - Last time review-List of terms for...

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Last time review -List of terms for test posted -Questions are evenly distributed with a little more on heritability -Use the lectures as a guide to what to study in the book
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Tungara frog example
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Fig. 24-17 (a) Punctuated pattern (b) Gradual pattern Time Patterns in the Fossil Record explains periods of apparent stasis (no change) punctuated by sudden change describes gradual change in a species’ existence
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Speciation Rates The punctuated pattern in the fossil record and evidence from lab studies suggests that speciation can be rapid The interval between speciation events can range from 4,000 years (some cichlids) to 40,000,000 years (some beetles), with an average of 6,500,000 years
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Chapter 25: From Speciation to Macroevolution Macroevolution is the cumulative effect of many speciation and extinction events Major changes in body form can result from changes in the sequences and regulation of developmental genes
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Development Genes development genes control the changes in Rate and timing ( eskeletons.org ) spatial pattern of an organism as its form develops - Genes
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