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In the Human Embryo, Structures Vaguely Resembling Gills Emerge Early

Question 75

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In the human embryo, structures vaguely resembling gills emerge early but transform into facial muscles, middle ear bones, and other structures.This seems to support which hypothesis?


A) ontogeny recapitulates phylogeny
B) phylogeny recapitulates ontogeny
C) cephalocaudal development recapitulates proximodistal development
D) proximodistal development recapitulates cephalocaudal development

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