What Happened When Weiss Grafted an Extra Leg onto a Salamander

question 130

Multiple Choice

What happened when Weiss grafted an extra leg onto a salamander adjacent to one of the hindlegs?

• A) The new leg gradually took over for the old.
• B) The new leg withered and died.
• C) Nerves from the old leg attached to the new in a random fashion.
• D) Branches of axons from the old leg attached to corresponding muscles in the new.

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