Gastrulation begins at the sea urchin blastula's vegetal pole.
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Q19: The process of fertilization produces a/an:
A)embryo.
B)blastula.
C)morula.
D)gastrula.
E)zygote.
Q20: Which of the following happens first in
Q21: Without programmed cell death,your _ might look
Q22: What action by the individual cells involved
Q23: Cleavage includes the stage of development between
Q25: Development occurs:
A)throughout the life of the organism.
B)only
Q26: The end of a zygote that contains
Q27: In general,the endoderm gives rise to tissues
Q28: The blastocoel is the hollow cavity in
Q29: Predict what would happen if a fruit
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