epigenesis
/ˌɛpɪˈdʒɛnɪsɪs/
noun
- The theory that an organism develops from an undifferentiated cell through a series of steps, rather than from a preformed miniature version.
- Students learned about epigenesis in their biology class when studying embryology.
- Epigenesis explains how a single fertilized egg becomes a complex animal.
- The concept of epigenesis was a major advance in developmental biology.
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