Multiple Choice
Use the following to answer questions :
Refer to the figure below showing a stage in limb development in a human embryo. 
-If the ZPA secreted more morphogen than normal,the most likely result would be
A) two thumbs.
B) five thumbs.
C) five digits but no thumb.
D) no little finger.
E) no digits.
Correct Answer:
Verified
Correct Answer:
Verified
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