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Nature 418, 14-15 (4 July 2002) | doi:10.1038/418014a
Developmental biology: Your destiny, from day one
Helen Pearson1
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Abstract
The mammalian body plan starts being laid down from the moment of conception, it has emerged. Helen Pearson considers the implications of a surprising shift in embryological thinking.
Your world was shaped in the first 24 hours after conception. Where your head and feet would sprout, and which side would form your back and which your belly, were being defined in the minutes and hours after sperm and egg united.
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