HW #22 - AP Biology Period 4 #22 Liem Nguyen 12/5/09...

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AP Biology Period – 4 #22 Liem Nguyen 12/5/09 Homework #22 ( 091211 ): Chapter 22 (due Friday 091211 ) Total points: 30 for Attempt on all questions Concept Map: 10 points Objectives The Historical Context for Evolutionary Theory 1. Explain the mechanism for evolutionary change proposed by Charles Darwin in On the Origin of Species. Natural selection: a change of a population over generations In his book, On the Origin of Species , Charles Darwin proposed that species change through natural selection, which is when the population changes over generations if an individual that possesses certain heritable traits leave more offspring than other individuals. 2. Define evolution and adaptation. Evolution: a change over time Evolutionary adaptation: an accumulation of inherited characteristics Evolution is a change over time in genetic composition of a population, while evolutionary adaptation is an accumulation of inherited characteristics that enhance an organisms’ ability to survive and reproduce in its specific environments. 3. Compare and contrast Aristotle’s scala naturae to Carolus Linnaeus’ classification scheme. Aristotle: scala naturae: scale of nature Carolus Linnaeus: taxonomy: the branch of biology concerning the naming and classification of organisms Aristotle thought that each form of life was perfect and permanent and existed on a specific rung on a ladder. Carolus Linnaeus thought up taxonomy, thus grouping similar species into different categories. 4. Describe the theories of catastrophism, gradualism, and uniformitarianism. Catastrophism: each boundary between strata represents a catastrophe Gradualism: profound change can take place through the cumulative effect of slow but continuous processes Uniformitarianism: same geologic processes are operating today, as in the past, at the same rate Catastrophism proposes that between every strata, or layer of rock, a catastrophic
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natural disaster occurred. Gradualism is the belief that Earth’s geologic features are a result of natural occurrences. Uniformitarianism is the theory that proposes all geologic processes are occurring at the same rate now as in the past. 5. Explain the mechanism for evolutionary change proposed by Jean-Baptiste de Lamarck. Explain why modern biology has rejected Lamarck’s theories.
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This note was uploaded on 11/06/2011 for the course AP BIO 101 taught by Professor Chan during the Fall '05 term at JFK.

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HW #22 - AP Biology Period 4 #22 Liem Nguyen 12/5/09...

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