January 6, 2022
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6:34Now PlayingBefore diving into animal diversity, we need a bit more information about animal development, as it will help us understand what we're looking at later. We know that animals reproduce sexually, so a sperm fertilizes an egg to yield a zygote. Then what happens? What is a blastula? What is gastrulation? What about organogenesis? How does one cell become an animal? Let's find out!
Script by Ryan Helcoski
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