Chicken embryo development stages, after fertilization in the oviduct, begin with cleavage, forming a blastoderm. This is followed by gastrulation, creating the three germ layers (ectoderm, mesoderm, and endoderm), the primitive streak, and the neural tube. Organogenesis then occurs, where these germ layers differentiate into organs and tissues, leading to a fully developed chick at hatching, typically on day 21. #ChickenEmbryo #EmbryoDevelopment #Embryology #AvianDevelopment #DevelopmentalBiolo

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