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#Question id: 7083


During development in avian embryo, the sheet of cells that grows anteriorly from Koller’s sickle combines with the primary hypoblast to form the complete hypoblast layer, also called the:

#Unit 5. Developmental Biology
  1. Epiblast
  2. Secondary hypoblast
  3. Posterior marginal zone
  4. Primitive streak

     


Answer:- Option(s): 2


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