Chapter 13 Outline

Chapter 13: Birds and Mammals

Early Development in Birds

• Fertilization and cleavage
• Avian gastrulation
• Prinitive streak: Gateway to gastrulation
• Axis specification and the avian “organizer”
• Left-right axis formation
• The tail: A coda to gastrulation

Early Development in Mammals

• The unique nature of mammalian cleavage
• Compaction and the nature of the blastocyst
• Cavitation
• Trophoblast or ICM? The first decision of the rest of your life
• Mammalian gastrulation
• Mammalian axis formation
• Experimental analysis of the Hox code
• The mammalian tail

Coda