By Transferring Neural Crest Cells from a Duck to a Quail

question 40

Multiple Choice

By transferring neural crest cells from a duck to a quail and vice versa, Richard Schneider and Jill Helms (2003) demonstrated that

• A) neural crest cells influence the development of beaks.
• B) beaks influence fitness traits.
• C) homeobox genes are conserved across species.
• D) gene duplication causes a difference in beak shape.

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