Question

describe the development of polylecithal egg upto three germinal layers in chick​

Answer 1

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Germ layer, any of three primary cell layers, formed in the earliest stages of embryonic development, consisting of the endoderm (inner layer), the ectoderm (outer layer), and the mesoderm (middle layer).

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Answer 2

Answer:

Mark it barainleist answer

Explanation:

Fertilization

Cleavage