Cortical granules are composed of

Albumin

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Keratin

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Mucopolysaccharide

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Melanin

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Solution

The correct option is D Mucopolysaccharide
Cortical granules are secretory vesicles unique to oocytes, which performs the cortical reaction. They are similar to the acrosome in sperm, which performs the acrosomal reaction. Both the acrosome and cortical granules are derived from the Golgi apparatus. They are composed of an acid mucopolysaccharide and protein. Hence, the correct answer is option C.

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