BIO 351 Module 6 Exam with precise detailed solutions

BIO 351 Module 5 Exam with |! |! |! |! |! |!




precise answers |!




The craniofacial skeletal tissues are primarily derived from a combination of
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___________ and _________? - Correct answer ✔Cranial neural crest,
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mesoderm



Which of the following embryonic structures gives rise to Meckel's cartilage,
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the precursor of the mandible? - Correct answer ✔Pharyngeal Arch 1
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Which of the following are necessary for cranial neural crest cell
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multipotency and survival? - Correct answer ✔FGF8 |! |! |! |! |! |!




A farmer has several ewes that gave birth to lambs with cyclopia and midline
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craniofacial defects. This is most likely due to which of the following? -
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Correct answer ✔Exposure to agents that antagonize Shh signaling
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In the early embryo what signals must occur together in the splanchnic
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mesoderm for cardiogenic mesoderm to be specified? - Correct answer
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✔DKK, Crescent, Cereberus, FGF8, and BMP
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Which of the following represents an important outcome of looping? -
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Correct answer ✔Establishment of left-right asymmetry
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