Which came first? Mouth or Anus? 😅

It ain’t a joke!

Humans are complex animals and complex animals are classified based on their embryo development. There are two kinds of classifications: Protostome and Deuterostome. During embryo development the first opening is called the blastopore. What this blastopore becomes into decides whether the animal is a protostome or deuterostome.

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Kiran Krishnan

Kiran Krishnan

Life enthusiast; Seeker; Renaissance man; Life long student ; Self taught scientist.