Episode 155: Embryology and Development

Episode 155: Embryology and Development

From The Science of Everything Podcast by James Fodor

October 24, 2025 · 1h 10m · Episode 158

About this episode

This episode introduces the process of embryonic development from fertilisation to organogenesis, discussing key stages and genetic mechanisms involved.

An introduction to the process of development, beginning with fertilisation and covering the stages of blastocyst formation, implantation into the uterus, gastrulation and its constituent cell movements, neurulation and the role of the notochord, and the beginnings of organogenesis. We also discuss the differences in gastrulation between protostomes and deuterostomes, along with the many specialised structures found in amniotes to protect the growing embryo from drying out. We conclude with overview of some of the genetic mechanisms government the development process, including Hox genes and their role in governing genetic regulatory networks. Recommended prelistening is Episode 25: Tissues, Organs, and Systems. If you enjoyed the podcast please consider supporting the show by making a PayPal donation or becoming a Patreon supporter. https://www.patreon.com/jamesfodor https://www.paypal.me/ScienceofEverything

People in this episode

Host: James Fodor

Topics covered

  • embryology
  • development
  • fertilisation
  • gastrulation
  • organogenesis
  • genetic mechanisms

Keywords

  • embryology
  • development
  • gastrulation
  • organogenesis
  • Hox genes
  • blastocyst
  • notochord

Mentioned in this episode

Organizations: Patreon, PayPal

Books & works: Episode 25: Tissues, Organs, and Systems

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