EPISODE 4 — THE ESSENTIAL ACORN WORM
Captain’s log: Today, we meet a revered ancestor of not only our species, but all animals saddled with the all-important spine: the acorn worm. Yes, this, um, “interesting” looking creature is a critical evolutionary link between vertebrates and invertebrates. In fact, approximately *70%* of human genes trace their ancestry back to this dirt-eating ocean dweller. So, to this phallic-looking phenom, we proffer a proud salut! Thanks for, you know, life.
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