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People have long wondered how it is that traits of parents are passed to their offspring. Aristotle suggested that in sexual reproduction, sperm contained the "message" to create new life while the uterus provided the material. Some medieval scholars believed sperm held complete bodies in miniature that required females only for gestation. But it was not until Gregor Mendel's famed experiments with peas and Darwin's work on evolution that the gene ...Log In or Sign Up to Read More