DeNegre Lab 8_evolution

DeNegre Lab 8_evolution - Lab 8 - Evolution Biological...

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Lab 8 - Evolution
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Biological Evolution The occurrence of heritable changes in successive generations of organisms (i.e., “descent with modification”). Plays a role in determining the diversity , distribution , and origin of living organisms.
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Two Categories of Evolution Micro-evolution: a change in allele frequency within a population over time. Macro-evolution: the formation of new species . [I.e., what happens when populations are not in “Hardy-Weinberg Equilibrium.”] [As indicated by fossil records, etc.]
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Evolution Requires Three Things: time 1. Reproduction: Organisms must reproduce to form a new generation.
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2. Heredity: Traits must be passed down from one generation to the next. Evolution Requires Three Things:
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3. Variation in Traits: there must be a spread of traits among the individual members of the population. Evolution Requires Three Things:
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How Evolution Occurs: Genetic Drift Changes in allele frequencies due to stochasticity . Examples:
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This note was uploaded on 08/18/2011 for the course GENETICS 382 taught by Professor Staff during the Spring '11 term at Rutgers.

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DeNegre Lab 8_evolution - Lab 8 - Evolution Biological...

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