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Question

The outermost covering of the newly released mammalian egg after ovulation is

A
Plasma membrane
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B
Vitelline membrane
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C
Zona pellucida
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D
Corona radiata
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Solution

The correct option is C Zona pellucida
The newly released egg after ovulation is surrounded by the corona radiata layer. The released egg after ovulation, contains a secondary oocyte and the first polar body, formed when the primary oocyte divides by meiosis I. The secondary oocyte is haploid. It is surrounded by three prominent layer the innermost is the plasma membrane, surrounded by vitelline membrane, then lies the zona pellucida and the outer most is the corona radiata.
So, the correct answer is option " Corona radiata'.

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