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Unformatted text preview: iv. Pedigree-sensitive-certain genes show up in certain groups v. Permanent vi. Prejudicial 3. Prenatal babies develop head feet, head end develops faster. Hands before feet a. 4 weeks, head grows big b. 5 weeks doubled length in 1 week 4. Teratogens a. Environmental agents that can affect the developing embryo or fetus b. There are no absolute teratogens c. Dose and timing are important d. Alcohol, tobacco, marijuana, over-the-counter drugs, prescription drugs, hard drugs, caffeine, artificial sweeteners, pesticides, air pollution, viruses, herbs...
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- Spring '10