2 to 9 weeks: Embryo {embryo, animal}| grows first at head and then down sides. First, disk sides curve up and around notochord at head. Then disk sides curve down to tail. Body folding makes digestive-system foregut and hindgut.
Biological Sciences>Zoology>Development>Stages>Gestation>Embryo 014 Day
4-Zoology-Development-Stages-Gestation-Embryo 014 Day
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Date Modified: 2022.0224