Biology · Developmental Biology
During the development of a mammalian embryo, the primary yolk sac is lined by cells derived from which of the following structures?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Embryonic epiblast
- 2Amniotic ectoderm
- 3Primitive endoderm (hypoblast)✓
- 4Syncytiotrophoblast
Correct answer
Primitive endoderm (hypoblast)
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