Fertilized ovum divides to form embryonal layer and primary organelles from embryonic layer. Then the embryonic coat, amara, umbilical cord, neural tube and body parts are formed. At this time the embryo is 0.25 cm long.
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Fertilized ovum divides to form embryonal layer and primary organelles from embryonic layer. Then the embryonic coat, amara, umbilical cord, neural tube and body parts are formed. At this time the embryo is 0.25 cm long.