Show Summary Details

Quick Reference

The hypothesis that an organism develops by the new appearance of structures and functions. An alternative hypothesis (termed ‘preformation’) is that development of an organism occurs by the unfolding and growth of characters already present in the egg at the beginning of development.

Subjects: Biological Sciences.

Reference entries

See all related reference entries in Oxford Index »

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.