What Is the Mechanism by Which Developmental Morphogens Such as Sonic

question 3

Multiple Choice

What is the mechanism by which developmental morphogens such as Sonic hedgehog control body patterning?

• A) By directly inducing gene expression
• B) By directly suppressing gene expression
• C) Through concentration gradients
• D) The order of expression of hedgehog genes relates to their position in the genome and determines body patterning
• E) By degrading proteins that suppress transcription

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