Which Statement About Frog Eggs and Early Development Is True

Multiple Choice

Which statement about frog eggs and early development is true?

A) The haploid nucleus of the egg is located in the vegetal hemisphere where the yolk is concentrated.
B) Sperm binding sites occur only on the surface of the animal hemisphere.
C) Distribution of the transcription factor β-catenin becomes concentrated in the animal hemisphere following rotation of the cortical cytoplasm.
D) The site of sperm entry will become the posterior region of the embryo.
E) The gray crescent will become the ventral region of the embryo.