"There's a secret code inside you, a code called DNA. A code that tells your body's cells what they should do each day. It looks like twisted ladders, or tiny, twirling noodles. It makes us into people, instead of into poodles. Why can't humans breathe underwater? Why are some people tall and others short? Why do we resemble our parents and grandparents? This book explores all this and more in flowing, rhyming text, explaining cells, DNA, and genetics...