Fertilized Egg “Laid” = Zygote shell membrane Egg shell Air sac Zygote Chalaza.

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Presentation transcript:

Fertilized Egg “Laid” = Zygote shell membrane Egg shell Air sac Zygote Chalaza

Structure of Fertilized Egg Zygote Chataza Air sac shell membrane Egg shell

Cleavage in Chick Embryo Cleavage 1 Cleavage 2 Cleavage 3,4,5 Sixteen Blastomeres four Blastomeres Two Blastomeres Area Opaca Area Pellucida Blastoderm Zygote

Gastrulation in Chick Yolk Blastodisc or Blastoderm Blastoderm elogated epiblast blastocoel hypoblast

Gastrulation in Frog

From Gastrula to Neurula

Three Germinal Layers in Chick Embryo Yolk Yolk sac

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