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Dr. Oz and Dr. Roizen on Pregnancy and Your Genes

Here's a point that will help you put epigenetics in perspective: We share 99.8 percent of the same DNA ask a monkey, and any two babies share 99.9 percent of the same DNA. Heck, we even have 50 percent of the same DNA as a banana. So genes alone cannot explain the diversity in the way we look, act, behave, and develop. How those genes are expressed plays a huge role in how vastly different we are from monkeys and how explicitly and subtly different we are from one another.

CLICK HERE to read more from "YOU: Having a Baby" and to view all of the charts, diagrams and images from the chapter.

Excerpted from You Having a Baby: The Owner's Manual to a Happy and Healthy Pregnancy by Michal Roizen and Mehmet Oz. Copyright © 2009 by Michael Roizen and Mehmet Oz. Excerpted with permission by Free Press, a Division of Simon & Schuster, Inc.

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