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Chapter 19: heredity (Variation is caused by (Mutation (Spontaneous…
Chapter 19: heredity
Variation is caused by
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Meiosis: crossing over, independent assortment
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Mutation
Gene mutation: albinism (plants CAN be albino??? shooketh), sickle-cell anaemia
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Definitions
genotype: genetic makeup, combination of alleles of an organism
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phenotype: expressed trait, outward appearance of an organism
Selection
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Artificial selection
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varieties are produced by selective breeding: different varieties of species are crossed to create new and better variety
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