Multiple Choice
Which of the following statements about heterochrony is true?
A) The gene BMP4 is expressed in both embryonic chickens and ducks.
B) The gene Gremlin is expressed in both embryonic chickens and ducks.
C) Gremlin protein activates a BMP inhibitor in both embryonic chickens and ducks.
D) Apoptosis of cells between the toes takes place in ducks but not chickens.
E) Both a and c
Correct Answer:

Verified
Correct Answer:
Verified
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