What key developmental task initiates the beginning of the embryonic stage?

Name: What key developmental task initiates the beginning of the embryonic stage?
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The formation of the germ layers is a key developmental task that initiates the beginning of the embryonic stage. The germ layers are the three layers of cells that eventually give rise to all of the organs and tissues in the body. This process begins during the embryonic stage, which starts at around 2 weeks after fertilization.

What Key Developmental Task Initiates the Beginning of the Embryonic