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2 Heredity and Variation

Genetic epidemiology is impelled by three basic questions:
  1. Why isn't everyone the same?
  2. Why are children like their parents?
  3. Why aren't children from the same parents all alike?
These questions address variation within individuals and covariation between relatives. As we shall show, covariation between relatives can provide useful information about variation within individuals.


Jeff Lessem 2002-03-21