Embryos have development stages that correspond to phylogenetic-evolution stages {recapitulation, development} {ontogeny recapitulates phylogeny}. First embryo stage corresponds to simple and ancient ancestor. Following embryo stages are later and more-complex ancestors. Last stage is current species.
Biological Sciences>Zoology>Development>Processes>Recapitulation
4-Zoology-Development-Processes-Recapitulation
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Date Modified: 2022.0224