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Cellular and Molecular Biology

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Germinal Embryonic Layers

CELLS-ZJDLBB

Multicellular organisms usually develop with 2 or 3 germinal layers.

Embryos that develop from two germinal layers are said to be

while those having three germinal layers are termed

.

The latter group possesses the following germinal layers during development: the ectoderm, mesoderm and endoderm.

In an organism with only two germinal layers, the layers are the

.

An example of an organism with only two germinal layers is the

.