Embryonic characteristic which evolutionarily creates
Write down the embryonic characteristic which evolutionarily creates echinoderms proximal to chordates?
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The Echinoderms and chordates are deuterostomes, that is, in their embryonic development blastopore turns in anus. All further animals with complete digestive system are protostomes, that is, their blastopore originates mouth. The blastopore is the first opening of digestive tube which appears in embryonic development.
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