18.1 Heredity and Environment
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Complex traits are affected by the environment.
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Complex traits are affected by multiple genes.
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The relative importance of genes and environment can be determined by differences among individuals.
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Genetic and environmental effects can interact in unpredictable ways.
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18.2 Resemblance Among Relatives
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For complex traits, offspring resemble parents but show regression toward the mean.
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Heritability is the proportion of the total variation due to genetic differences among individuals.
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DLAP questions | morris2e_ch18_10_dlap.xml | 5616b2cc757a2e1c72000000 |
Twin studies help separate the effects of genes and environment in differences among individuals.
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DLAP questions | morris2e_ch18_11_dlap.xml | 5616b2cc757a2e1c72000000 |
18.4 Complex Traits in Health and Disease
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Most common diseases and birth defects are affected by many genes that each have relatively small effects.
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DLAP questions | morris2e_ch18_13_dlap.xml | 5616b2cc757a2e1c72000000 |
Human height is affected by hundreds of genes.
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DLAP questions | morris2e_ch18_14_dlap.xml | 5616b2cc757a2e1c72000000 |
Case 3: Can personalized medicine lead to effective treatments of common diseases?
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DLAP questions | morris2e_ch18_15_dlap.xml | 5616b2cc757a2e1c72000000 |
DLAP questions | morris2e_ch18_16_dlap.xml | 5616b2cc757a2e1c72000000 |