3-Heredity and microevolution

3-Heredity and microevolution - Microevolution What Causes...

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Microevolution What Causes Evolutionary Change?
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Types of Evolution MICRO MACRO Short Long Allele frequency Species
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TIME
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Fig. 5-6, p. 117 Speciation: Disruptive Selection
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Population genetics Deme Gene pool Species biological
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Hardy-Weinberg Law of Equilibrium Conditions 1. Large population 2. No mutation 3. No migration 4. No natural selection 5. Mating is random 6. Everyone breeds 7. Number of offspring pp p q p q pq pq qq p 2 + 2pq + q 2 = 1
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Pedigree Chart Basics Parents F-1
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What Can Cause Allele Frequencies Change? 1. Mutation 2. Natural Selection 3. Gene Flow 4. Genetic Drift
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Mutation new genetic variation single DNA sentence The cat ate the rat (normal gene) The r at ate the rat (point mutation) The cat the ate rat (inversion) The cat ate rat (deletion)
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Sickle Cell Mutation (Point mutation)
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Normal Vs. Sickled RBC
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Autosomal Recessive Traits Both Carrier parents < 50% affected Hgb A Hgb s AA AS AS SS S A A S
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Autosomal Recessive Pedigree Chart Parents F-1
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2. Natural Selection
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Industrial Revolution
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2. Natural Selection Malaria
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Sickle Cell Allele Distribution Malaria
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Technological Change Shaduf Saqia
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Conditions for Malaria
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