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  • Print publication year: 2021
  • Online publication date: April 2021

Summary of Common Misunderstandings

Summary

To study development is to study multicellularity. This is a traditional but unjustified restriction of developmental biology. Structural (not simply metabolic) changes are also observed in single-celled organisms (very conspicuous, for example, in trypanosomes) and in the production of the single-cell phase (such as eggs and sperm cells) in the biological cycle.