Author Question: At which developmental stage should one be able to first distinguish a protostom (Read 616 times)

hummingbird

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At which developmental stage should one be able to first distinguish a protostome embryo from a deuterostome embryo?
A) fertilization
B) cleavage
C) gastrulation
D) coelom formation
E) metamorphosis



geoffrey

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hummingbird

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