By Transferring Neural Crest Cells from a Duck to a Quail

question 19

Multiple Choice

By transferring neural crest cells from a duck to a quail and vice versa,Schneider and Helms 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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