The yolk of the frog egg
A) prevents gastrulation.
B) is concentrated at the animal pole.
C) is homogeneously arranged in the egg.
D) impedes the formation of a primitive streak.
E) leads to unequal rates of cleavage for the animal pole compared to the vegetal pole.
Answer: E) leads to unequal rates of cleavage for the animal pole compared to the vegetal pole.
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