Template talk:BGDA Practical 3 - Oogenesis and Ovulation Interactive

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Zona Pellucida

{Which of the following statements is not correct about the zona pellucida. |type="()"} - It is a glycoprotein layer synthesised mainly by the primary oocyte. - It contains specifies- specific molecules. - It becomes modified at fertilisation to block polyspery. - It protects the embryo during early development. + It penetrates the endometrium to facilitate implantation. || The zona pellucida is lost before implantation, penetration of the endometrium, can commence. }